May Weather in Cahokia, United States

Last updated: February 24, 2025

In May, Cahokia experiences a dynamic climate, characterized by a maximum temperature reaching 34°C (94°F), while the average temperature settles at a comfortable 20°C (68°F). The weather can fluctuate, with minimum temperatures dipping to 4°C (40°F). Rainfall is notable this month, accumulating to 146 mm (5.7 in) over the course of 14 days, contributing to an 82% humidity level that envelops the area. This combination of warmth and moisture creates a lush landscape, setting the stage for the vibrant beauty of late spring.

May Temperature in Cahokia

In Cahokia, May marks a vibrant shift from the cold grip of winter to a warm embrace heralding the arrival of summer. With temperatures resembling a refreshing embrace, May showcases a gentle minimum of 4°C (40°F), climbing to a comfortable average of 20°C (68°F). The peak temperatures can reach a sizzling 34°C (94°F), illustrating a notable increase from the cooler months previous. This month acts as a bridge, paving the way for deeper warmth, as the community looks forward to outdoor activities and flourishing nature. May's consistently mild temperatures invite both locals and visitors to revel in the beauty of spring, making it a delightful time to explore this historical region.

May Weather in Cahokia: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Cahokia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec333647556877807773594539
Data source: Temperature data for Cahokia generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Cahokia

May in Cahokia marks a significant uptick in precipitation, with the month receiving 146 mm (5.7 in) of rain over 14 days—the highest totals recorded so far this year. This increase is part of a broader trend, as rainfall begins to intensify from the preceding months of April and March, which registered 135 mm and 134 mm, respectively. The spring months collectively exhibit a pattern of rising moisture levels, making May particularly lush and vibrant, in stark contrast to September’s drier average of 58 mm (2.3 in). As the transition into summer begins, this period sets the stage for a dynamic interplay of weather that not only nourishes the landscape but also serves as a precursor to the drier months ahead.

May Precipitation Trends in Cahokia

The chart displays monthly precipitation patterns in Cahokia, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec79831351351469492131581077564
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cahokia

In Cahokia, the month of May marks a pivotal transition in humidity levels, maintaining a steady 82% similar to the preceding months of April and January. This consistency suggests an overarching pattern where spring months nurture elevated humidity, creating a lush environment. As summer looms, June brings an increase to 83%, hinting at the impending heat and moisture that define the warmer season. Notably, humidity begins to decrease in the fall, dropping to 76% by September, indicating a gradual shift towards drier conditions. This cycle underscores the region's dynamic weather patterns, blending retained moisture with seasonal changes.

May Average Humidity in Cahokia

This chart illustrates the average monthly humidity levels in Cahokia, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cahokia

As May arrives in Cahokia, the UV Index reaches a notable 10, signifying a very high risk of harm from unprotected sun exposure, with a burn time of just 15 minutes. This marks a significant increase from the previous months, reflecting a trend where UV levels escalate as we move from spring into summer. After experiencing a UV Index of 9 in April, residents should brace for heightened sun intensity, with similar levels persisting into June. As outdoor activities become more frequent in warmer weather, it's crucial to stay vigilant about sun protection. For detailed information, check out Cahokia UV Index to help guide your sun safety strategies this month.

Maximum UV Index Levels in Cahokia for May

The chart shows the monthly maximum UV Index (UVI) for Cahokia in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109753
Data source: Cahokia May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Cahokia

As spring blossoms into summer, Cahokia, United States, welcomes May with an impressive 289 hours of sunshine, marking a notable peak in daylight hours. This month stands out in a year-long trend of increasing sunlight, beginning with a modest 127 hours in January and steadily climbing to reach its May zenith. Following the warmth of April, which enjoyed 240 hours, May showcases a vibrant leap towards the summer months, where the sunshine continues to escalate, peaking in July with 349 hours. This progression reflects the joyful transition into the summer season, reminding us of those sun-kissed days filled with warmth and outdoor adventures. As we relish in the abundant sunshine of May, one can anticipate the radiance that the approaching summer will bring.

Monthly Sunshine Duration in Cahokia: May Highlighted

The May sunshine duration represents the total number of hours Cahokia experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec127h177h207h240h289h328h349h328h291h242h215h196h
Data source: Cahokia May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Cahokia During May

In Cahokia, the arrival of May signals a notable dip in sunshine, with only 27% chance of sunny days compared to the preceding months. This trend marks a departure from the increasing likelihood of sun in April, which stands at 49%. As spring transitions into summer, sunny probabilities begin to rise again in June and July, reaching their peak at 51%. While May may not be the sunniest month, it does bridge the gap between the blooming, but slightly overcast, April and the brighter, more radiant days of summer. The fluctuating patterns throughout the year highlight the inherent variability of weather, reminding us that May offers its own unique charm, even in the absence of abundant sunshine.

Percentage of Sunny Days in May in Cahokia

The chart illustrates the percentage of sunny days in Cahokia throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Cahokia experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec30%29%45%49%27%42%51%47%64%40%53%48%
Data source: Cahokia May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Cahokia in May

As spring transitions into summer, Cahokia, United States, experiences a notable increase in daylight duration. Starting the year with just 9 hours in January, the days gradually lengthen, reaching 14 hours by May, a peak that persists through June and July. This extended daylight during the warmest months not only enhances outdoor activities but also invigorates the vibrant local life. However, as summer wanes into autumn, daylight begins its gentle decline, with September offering 12 hours and October trailing off to 11 hours. The cycle continues into the colder months, returning to 10 hours in November and dipping back to 9 hours in December. This rhythmic pattern of increasing and decreasing daylight reflects the seasonal changes that define Cahokia's natural beauty and lifestyle throughout the year.

Average Daylight Hours in Cahokia for May

The chart illustrates the variation in daylight duration in Cahokia throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 48m10h 45m11h 58m13h 13m14h 16m14h 47m14h 30m13h 34m12h 22m11h 8m10h 3m9h 30m
Data source: Cahokia daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Cahokia

In Cahokia, United States, the winds shift subtly throughout the year, with May experiencing an average wind speed of 3.1 m/s (7 mph). This marks a slight decrease from the breezier months of January through April, where wind speeds hovered around 3.2 to 3.7 m/s. As summer approaches, June and July see a notable drop in wind activity, with speeds dwindling to 2.7 m/s (6 mph) and 2.0 m/s (5 mph), respectively. This overall trend reflects a seasonal pattern where spring’s gentle breeze gives way to the calmer airs of summer, making May a transitional month that encapsulates the shift from lively winds to the warm, still days ahead.

Average May Wind Speed in Cahokia

The chart displays monthly wind speed patterns in Cahokia, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.73.73.43.1 m/s2.72.02.33.03.43.33.6
Data source: Cahokia May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Cahokia Compares to Other Months

The weather in Cahokia changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Cahokia and find detailed weather information for every month.

May and January present starkly contrasting weather conditions. In May, temperatures range from a mild 4°C (40°F) at night to a warm 34°C (94°F) during the day, with an average of 20°C (68°F). The month also experiences significant rainfall, totaling 146 mm (5.7 in) over approximately 14 days, all while maintaining a high humidity level of 82%. In contrast, January is much colder, with temperatures dropping to a chilling minimum of -21°C (-5°F) and averaging around 0°C (33°F) during the day, peaking at just 20°C (68°F) on the warmest days. Precipitation is lighter in January, amounting to 79 mm (3.1 in) over 8 days, but the humidity remains consistent at 82%. For a detailed view of January weather specifics, visit Cahokia weather in January.

May and February present stark contrasts in weather conditions. In May, temperatures range from a chilly 4°C (40°F) at night to a warm 34°C (94°F) during the day, with an average of 20°C (68°F). This month witnesses considerable rainfall, accumulating 146 mm (5.7 in) over approximately 14 days, and maintains a high humidity level of 82%. In contrast, February experiences far colder temperatures, with nighttime lows plunging to -19°C (-2°F) and daytime highs reaching a milder 25°C (77°F), averaging around 2°C (36°F). It also has less rainfall, totaling 82 mm (3.2 in) across about 10 days, along with a slightly lower humidity of 80%. For more details on February weather, check out Cahokia weather in February.

May weather is characterized by a significantly warmer climate compared to March, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 34°C (94°F), and an average temperature of 20°C (68°F). In contrast, March experiences much cooler temperatures, with a minimum of -16°C (3°F) and a maximum of 28°C (82°F), averaging only 8°C (48°F). While both months see considerable precipitation, May has slightly higher rainfall at 146 mm (5.7 in) over 14 days, compared to March’s 134 mm (5.3 in) over 12 days. Additionally, humidity is slightly higher in May at 82%, compared to March's 80%. For a closer look at March weather details, visit Cahokia weather in March.

In comparing the weather conditions of April and May, May typically experiences warmer temperatures with an average of 20°C (68°F), significantly higher than April’s average of 13°C (56°F). While April has a lower minimum temperature of -4°C (25°F) compared to May’s 4°C (40°F), both months can reach similar high temperatures, with May peaking at 34°C (94°F) and April at 31°C (88°F). Precipitation levels are fairly similar, with May receiving 146 mm (5.7 in) of rain over 14 days, slightly exceeding April's 135 mm (5.3 in) over 11 days, and both months show a comparable relative humidity of around 80-82%. For a more detailed look at April weather, you can visit Cahokia weather in April.

May and June present distinct weather patterns. In May, temperatures range from a chilly minimum of 4°C (40°F) to a pleasant average of 20°C (68°F), with occasional peaks reaching up to 34°C (94°F). The month typically experiences higher precipitation, totaling 146 mm (5.7 in) over 14 days, and maintains a high humidity level of 82%.

In contrast, June brings warmer conditions with minimum temperatures rising to 12°C (54°F) and an average of 25°C (77°F), which can reach highs of 36°C (97°F). Rainfall decreases slightly to 94 mm (3.7 in) over 11 days, while humidity remains relatively stable at 83%.

For more detailed insights, check out Cahokia weather in June.

May and July exhibit distinct climatic characteristics. In May, temperatures range from a cooler minimum of 4°C (40°F) to a warm average of 20°C (68°F), with highs reaching up to 34°C (94°F). The month is also marked by significant precipitation, totaling 146 mm (5.7 in) over approximately 14 days, resulting in high humidity levels at 82%. In contrast, July brings a marked increase in warmth, with temperatures starting at a minimum of 16°C (61°F), averaging 27°C (80°F), and peaking at an impressive 38°C (102°F). The precipitation in July diminishes to 92 mm (3.6 in) over about 10 days, maintaining a similar humidity level of 81%. These differences highlight the transition from the cooler, wetter conditions of May to the hot, drier climate of July. For further details on July weather, check Cahokia weather in July.

In comparing the weather between May and August, it is clear that August tends to be warmer overall, with an average temperature of 25°C (77°F) compared to May's 20°C (68°F). May experiences a wider range of temperatures, with highs reaching up to 34°C (94°F), while August can peak at 36°C (96°F). Precipitation levels are relatively similar, with May seeing 146 mm (5.7 in) over 14 days and August slightly less at 131 mm (5.1 in) over 12 days. Humidity remains high in both months, but is marginally lower in August at 80% compared to 82% in May. For more specific insights into the weather conditions in August, you can check Cahokia weather in August.

In May, temperatures range from a cool minimum of 4°C (40°F) to a warm maximum of 34°C (94°F), with an average of 20°C (68°F). This month experiences a higher level of precipitation, totaling 146 mm (5.7 in) over 14 days and accompanied by high humidity levels of 82%. In contrast, September offers slightly warmer temperatures with a minimum of 7°C (46°F) and a maximum of 35°C (95°F), averaging 23°C (73°F). Precipitation drops significantly to 58 mm (2.3 in) over just 7 days, and humidity is lower at 76%. For more details on weather patterns in September, check out Cahokia weather in September.

May and October exhibit distinct weather patterns that reflect the transition between spring and autumn. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 34°C (94°F), with an average of 20°C (68°F). The month sees a substantial amount of rainfall, accumulating to 146 mm (5.7 in) over 14 days, contributing to a high humidity level of 82%. In contrast, October features cooler temperatures, with a minimum of -3°C (26°F) and an average of 15°C (60°F), while still reaching a maximum of 34°C (94°F) on some days. Precipitation is lower at 107 mm (4.2 in) over 11 rainy days, and humidity decreases to 76%. For more detailed insights on October weather, refer to Cahokia weather in October.

May and November present starkly contrasting weather patterns. In May, temperatures range from a pleasant 20°C (68°F) on average, with highs reaching up to 34°C (94°F), while the minimum temperature hovers at 4°C (40°F). This month also sees considerable rainfall, totaling 146 mm (5.7 in) spread across about 14 days, accompanied by a humidity level of 82%. In contrast, November experiences much cooler temperatures, with an average of 7°C (45°F) and lows dropping to -12°C (10°F). Although it has lower total precipitation at 75 mm (3.0 in) over just 9 days, the humidity remains relatively high at 85%. For more detailed insights into the climate during this month, visit Cahokia weather in November.

May and December weather offer a striking contrast in temperature and precipitation patterns. In May, temperatures range from a chilly 4°C (40°F) to a sweltering 34°C (94°F), with an average of 20°C (68°F), creating a warm and humid atmosphere with 82% humidity. The month also sees considerable rainfall, with 146 mm (5.7 in) of precipitation spread over 14 days. In contrast, December features much colder conditions, with temperatures dipping as low as -16°C (3°F) and peaking at 23°C (74°F), for an average temperature of just 4°C (40°F). Precipitation drops to 64 mm (2.5 in) over 7 days, with slightly higher humidity at 86%. For further details on December weather, you can visit Cahokia weather in December.

Compare Cahokia's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Cahokia

As we transition into May, Cahokia experiences a refreshing shift in weather compared to the cooler months that precede it. With temperatures averaging a pleasant 20°C (68°F), this month brings with it warmer days that contrast sharply with the chill of earlier spring. However, the increase in warmth also ushers in a notable rise in humidity, averaging around 82%, making the air feel more summery. May is characterized by its higher precipitation levels, with about 14 days of rain contributing to a total of 146 mm (5.7 in), often nourishing the lush greenery that defines the landscape. This blend of warmth and moisture not only creates a vibrant atmosphere but also sets the stage for the hotter summer months ahead. For more detailed insights into how May weather compares to other times of the year, check out Cahokia Climate.