Last updated: February 24, 2025
July in St. Louis offers a scorching summer experience, with temperatures soaring to a maximum of 38°C (101°F) and an average warmth around 26°C (80°F). The month sees a comfortable minimum of 16°C (61°F) during the cooler nights. However, this vibrant weather is accompanied by significant humidity levels at 81%, creating a muggy atmosphere. Rainfall is not uncommon, with 97 mm (3.8 in) of precipitation spread over 11 days, providing a refreshing contrast to the intense summer heat. Whether basking in the sun or seeking shelter from the occasional storm, July in St. Louis promises an unforgettable summertime adventure.
In July, St. Louis transforms into a summer haven, showcasing its warmest temperatures of the year. With minimums around 16°C (61°F) and soaring maximums peaking at a toasty 38°C (101°F), the city basks in the heat, averaging a pleasant 26°C (80°F). This month marks a significant leap from the chilly grips of January, where temperatures plunge to as low as -22°C (-7°F). As the summer sun dominates, July not only brings warmth but also a lively atmosphere, making it an ideal time for outdoor adventures and community gatherings. The contrast from the cooler early months highlights the seasonal transition, inviting both locals and visitors to revel in the vibrant energy of St. Louis during its hottest spell.
In July, St. Louis experiences a notable dip in precipitation compared to the preceding months, receiving 97 mm (3.8 in) of rain over 11 days. This aligns with a gradual decline from the earlier peak in May, which saw 145 mm (5.7 in), indicating a trend of diminishing rainfall as summer progresses. Interestingly, the consistent number of precipitation days—11 days—in both July and the previous month highlights that while the city remains susceptible to summer storms, the intensity and volume of rain may be tapering off. As the month transitions into August, residents can expect an uptick, with rainfall forecasted to rise again to around 130 mm (5.1 in), suggesting that July serves as a brief interlude in St. Louis’s summer rain cycle.
In July, St. Louis experiences a slight dip in humidity, averaging around 81%, which is a moderate departure from the higher levels seen earlier in the summer. The month follows a trend of increasing moisture from June's peak at 83%, and it reflects a general pattern of high humidity throughout the warmer months. Interestingly, July's humidity is similar to the levels recorded in May and August, suggesting a consistent summer atmosphere characterized by muggy conditions. As the season progresses into fall, humidity starts to decline more significantly, with the averages falling to 76% by September and October. Overall, while July is a humid month, it benefits from a slight reprieve compared to the peak of summer humidity, making it a typical yet enjoyable month in St. Louis.
In July, St. Louis experiences a UV Index of 10, categorizing the exposure as very high and marking a consistent trend seen throughout the summer months. After peaking in June at 11, the UV levels remain elevated, indicating that sun safety is crucial for residents and visitors alike. The recommended burn time stays at 15 minutes, emphasizing the need for protective measures such as sunscreen and clothing during outdoor activities. This trend mirrors the intensity seen in May and August, highlighting a sustained period of strong sun exposure in the region. For those planning to spend time outdoors, it’s vital to remain vigilant about UV exposure risks during this peak season in St. Louis. For more detailed information, check out St. Louis UV Index.
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In July, St. Louis basks in 348 hours of radiant sunshine, representing the peak of the city’s sun-filled summer. This month stands out as the sunniest of the year, shining brightly after a steady climb from January’s mere 125 hours. The trend is unmistakable: each month brings an increase in sunlight, with June closely following with 328 hours. This seasonal ascent not only boosts the residents' spirits but also enhances outdoor activities during the warm summer days. While August remains plentiful with 330 hours, the slight dip signals the transition toward the cooler months ahead, reminding us of nature's rhythmic cycle as summer inevitably fades into autumn.
July marks a peak moment of sunshine in St. Louis, where the likelihood of clear skies reaches 51%. This upward trend from the earlier summer months indicates a shift towards brighter and more inviting days. Following June's modest 41% chance of sun, July offers a greater promise of warmth and outdoor activities. Notably, the sunshine begins to dwindle slightly in August, with a 47% chance, making July a prime time for enjoying the outdoors before the season starts to wane. As the year progresses, months like September with 64% offer their own allure, but for those looking to soak up the summer sun, July stands out as a quintessential choice.
In St. Louis, United States, July shines brightly with an impressive 14 hours of daylight, mirroring the extended daylight hours seen in June. This vibrant month showcases the pinnacle of summer with plentiful sunshine, allowing residents and visitors alike to relish outdoor activities and longer evenings. Following July, daylight begins its gradual descent, tapering to 13 hours in August and continuing to decrease through the autumn months. This trend highlights a seasonal ebb, transitioning from the height of summer's brightness to the more subdued light characteristic of fall, ultimately returning to the shorter days of winter.
In July, the winds in St. Louis take a noticeable dip, averaging a gentle 2.1 m/s (5 mph), the lowest point of the year. This calm month follows a gradual decrease from the spring's breezier days, where winds hovered around 3.5 m/s (8 mph) in April and May. As summer fully sets in, the milder winds offer a stark contrast to the refreshing breezes of earlier months like March and April. Following July, the winds pick up slightly again in August, suggesting that the warm summer air may stifle stronger gusts. This trend highlights a seasonal rhythm; the gentle summer breezes wrap St. Louis in a soothing embrace during its warmest days.
The weather in St. Louis changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in St. Louis and find detailed weather information for every month.
In July, St. Louis experiences warm to hot weather, with average temperatures around 26°C (80°F), reaching a maximum of 38°C (101°F). The month is characterized by relatively high humidity at 81%, along with substantial rainfall, totaling 97 mm (3.8 inches) over about 11 days. In stark contrast, January brings frigid conditions, where the average temperature plummets to 0°C (32°F), accompanied by plunging lows of -22°C (-7°F). Though January has lower overall precipitation at 76 mm (3.0 inches) over 8 days, the humidity remains similarly high at 82%. For a closer look at January weather patterns, visit St. Louis weather in January.
July and February exhibit strikingly different weather patterns. In July, temperatures soar with a minimum of 16°C (61°F) and an average of 26°C (80°F), reaching a sweltering maximum of 38°C (101°F). The month is also characterized by high humidity at 81%, coupled with 97 mm (3.8 in) of precipitation over 11 days. In contrast, February presents a much colder climate, featuring a minimum temperature of -19°C (-1°F) and an average of just 2°C (35°F), with a maximum of 24°C (76°F). Despite slightly less precipitation at 80 mm (3.2 in) over 10 days, the humidity remains relatively consistent at 80%. For more specifics on February weather, check St. Louis weather in February.
When comparing the weather in July and March, the stark differences are immediately apparent. July boasts much warmer temperatures, with a minimum of 16°C (61°F) and an average of 26°C (80°F), peaking at a scorching 38°C (101°F). In contrast, March experiences much cooler conditions, with temperatures ranging from a minimum of -17°C (2°F) to a maximum of 27°C (81°F) and an average of just 8°C (47°F). Additionally, while July sees 97 mm (3.8 in) of precipitation over approximately 11 days, March is slightly wetter with 131 mm (5.2 in) over 12 days, though humidity levels remain similar at around 80%. For more detailed information on March weather in St. Louis, you can check out St. Louis weather in March.
When comparing the weather in July and April, a stark contrast emerges in temperature and overall climate conditions. July boasts warmer temperatures, with an average of 26°C (80°F) and highs reaching up to 38°C (101°F), while April experiences a much cooler average of 13°C (55°F) and maximums of 30°C (87°F). Despite both months experiencing precipitation on approximately 11 days, July receives slightly less rainfall at 97 mm (3.8 in) compared to April's 129 mm (5.1 in). Humidity levels are relatively similar, with July at 81% and April at 80%. For more details on April's weather, you can check out St. Louis weather in April.
In comparing the weather of July and May, July presents a distinctly warmer climate, with average temperatures reaching 26°C (80°F) and maximums soaring up to 38°C (101°F), in contrast to May's milder average of 20°C (68°F) and a high of 34°C (94°F). Interestingly, while July typically experiences less precipitation, averaging 97 mm (3.8 in) over 11 days, May sees a higher total of 145 mm (5.7 in) across 14 days. Both months have similar humidity levels, around 81% for July and 82% for May, contributing to a generally humid atmosphere. For more detailed information, you can visit St. Louis weather in May.
In comparing the weather between June and July, July tends to be slightly warmer, with average temperatures reaching 26°C (80°F) compared to June's average of 25°C (77°F). The maximum temperatures in both months are high, with July peaking at 38°C (101°F) and June at 36°C (98°F). Interestingly, while July experiences similar precipitation levels to June, with 97 mm (3.8 in) compared to June's 101 mm (4.0 in), the humidity remains slightly lower in July at 81% compared to 83% in June. For more detailed information, you can check St. Louis weather in June.
In July, the weather typically features a minimum temperature of 16°C (61°F) and an average of 26°C (80°F), with highs reaching up to 38°C (101°F). This month experiences about 97 mm (3.8 in) of precipitation spread over 11 days, alongside a humidity level of 81%. In comparison, August sees cooler temperatures with a minimum of 12°C (54°F) and an average of 25°C (76°F), while the maximum temperature is slightly lower at 35°C (96°F). Precipitation increases to 130 mm (5.1 in) but remains consistent with 11 days of rainfall, and humidity is marginally lower at 80%. For more details on weather trends, check St. Louis weather in August.
In comparing the weather variations between July and September, July tends to be significantly warmer and more humid. July’s average temperature reaches a comfortable 26°C (80°F), with highs soaring to 38°C (101°F), though it also experiences notable precipitation at 97 mm (3.8 in) over 11 days. In contrast, September brings a cooling trend with average temperatures dropping to 22°C (73°F) and a maximum of 35°C (95°F). The precipitation is also less intense in September, totaling 56 mm (2.2 in) over 7 days, along with a slight decrease in humidity to 76%. This shift reflects the transition from the heat of summer to the more temperate conditions of early fall. For more details, check out St. Louis weather in September.
In July, the weather is characterized by warm to hot temperatures, with averages around 26°C (80°F) and highs reaching up to 38°C (101°F), combined with high humidity levels of 81%. In contrast, October experiences a significant drop in temperatures, featuring a much cooler average of 15°C (59°F) and minimums dipping to -4°C (26°F). Although both months see about 11 days of precipitation, October has slightly more rainfall at 105 mm (4.1 in) compared to July's 97 mm (3.8 in). Despite the reduced humidity of 76% in October, the changing weather marks a noticeable shift from the summer heat. For more details, visit St. Louis weather in October.
July and November present stark contrasts in weather patterns. July boasts warm temperatures, with an average of 26°C (80°F) and highs reaching up to 38°C (101°F). The month experiences significant humidity at 81%, alongside 97 mm (3.8 in) of rainfall over 11 days. In contrast, November sees a much cooler climate, with average temperatures dropping to 7°C (44°F) and minimums plunging to -13°C (9°F). Despite a milder amount of precipitation at 75 mm (2.9 in) over just 9 days, the humidity remains high at 85%. For those interested in further details, check out St. Louis weather in November.
The weather in July contrasts sharply with that of December. In July, temperatures typically range from a mild minimum of 16°C (61°F) to a sweltering maximum of 38°C (101°F), with an average of 26°C (80°F). The month is characterized by high humidity at 81% and significant rainfall, averaging 97 mm (3.8 in) over 11 days. In contrast, December brings a stark chill, with temperatures plummeting from a low of -18°C (0°F) to a maximum of just 22°C (71°F), averaging around 4°C (39°F). Precipitation is lower in December at 59 mm (2.3 in) over 7 days, while humidity remains relatively high at 86%. For more details on the December weather in St. Louis, check out St. Louis weather in December.
July in St. Louis stands out with its heat and humidity, often feeling much warmer than other months. The city experiences its peak temperatures, averaging around a balmy 26°C (80°F), with maximums soaring to a sizzling 38°C (101°F). High humidity levels, averaging 81%, can make outings feel even more intense, while frequent rain showers—occurring on about 11 days—offer brief relief from the summer heat. While precipitation amounts to 97 mm, July is a vibrant month that showcases St. Louis at its warmest. This intense climate can influence activities and events, underscoring the need for adequate preparation. For more detailed insights, explore St. Louis Climate.