August Weather in Mount Shasta, United States

Last updated: February 24, 2025

In August, Mount Shasta experiences a delightful range of temperatures, with maximums reaching 37°C (98°F), averages around 22°C (71°F), and lows dipping to 7°C (44°F). This warm weather is accompanied by a relatively low humidity level of 42%, providing a comfortable environment for outdoor activities. While the month witnesses only 9 mm (0.4 in) of precipitation over just 2 days, the scenery remains stunning and invites adventurers to explore its natural beauty. August in Mount Shasta is truly an ideal time to bask in the sun while enjoying the scenic landscapes.

August Temperature in Mount Shasta

August in Mount Shasta offers a delightful embrace of summer warmth, with temperatures typically ranging from a minimum of 7°C (44°F) to a maximum of 37°C (98°F), averaging a comfortable 22°C (71°F). This month follows the heat of July, maintaining similar high temperatures while providing a slight reprieve with cooler evenings. Notably, August marks a peak in warmth before the fall chill begins to creep in as September approaches, showcasing a clear trend of elevating temperatures throughout the summer months. With vibrant days and comfortable nights, it’s a perfect time to explore the natural beauty that the region offers amidst the stunning backdrop of Mount Shasta.

August Weather in Mount Shasta: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Mount Shasta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec343538455464737162504134
Data source: Temperature data for Mount Shasta 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.

August Precipitation in Mount Shasta

In Mount Shasta, August typically sees a significant drop in precipitation, with only 9 mm (0.4 in) falling over just 2 days. This marks a continuation of the dry trend established in the summer months, particularly after July, which recorded an extremely low 5 mm (0.2 in) of rain for the entire month. The dwindling rain is a stark contrast to the wetter winter months, where precipitation frequently exceeds 200 mm. As the region transitions into autumn, slight increases in rainfall are expected in September, suggesting a gradual return to a more moisture-laden climate. Overall, August serves as a bridge between the dry summer and the forthcoming rainy season, offering a brief respite before the region's precipitation levels begin to rise again.

August Precipitation Trends in Mount Shasta

The chart displays monthly precipitation patterns in Mount Shasta, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec2272182041218727592376129153
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Mount Shasta

In August, Mount Shasta experiences a notable shift in humidity, dropping to 42%, the lowest level of the year. This decrease marks a significant transition from the higher humidity levels of the earlier months, where figures hovered around 86% to 87% from January through March. As summer progresses, humidity steadily declines, reaching 56% in July, before plummeting in August. This trend highlights a dry spell typical of late summer in the region, paving the way for the resurgence of humidity in the fall months, where levels begin to climb again in September.

August Average Humidity in Mount Shasta

This chart illustrates the average monthly humidity levels in Mount Shasta, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%83%72%67%56%42%46%67%86%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Mount Shasta

In August, Mount Shasta experiences a very high UV Index of 10, marking a slight decrease from July's peak of 11. This trend indicates that while the region enjoys the warmth of summer, sun exposure remains significant and caution is warranted, as the burn time is around 15 minutes. The UV Index has shown a progression throughout the year, starting from a moderate level in the winter months, escalating sharply to extreme levels by late spring, and tapering to very high as summer draws to a close. As outdoor enthusiasts revel in the stunning views and activities of August, staying protected from the sun’s rays is essential. For more detailed information on UV patterns, visit Mount Shasta UV Index.

Maximum UV Index Levels in Mount Shasta for August

The chart shows the monthly maximum UV Index (UVI) for Mount Shasta in August, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3589111211109743
Data source: Mount Shasta August 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.

August Sunshine in Mount Shasta

August in Mount Shasta shines brightly, offering 356 hours of sunshine—a delightful continuation of the summer's glow. As the peak of summer fades, the sun-drenched days of July lead into August, which sees only a slight dip in sunshine hours compared to 402 hours in July. This trend of abundant sunlight extends from the warming days of spring, with a remarkable increase from 282 hours in April to the summer peak. Although the arrival of autumn in September brings a decrease to 309 hours of sunshine, August remains a vibrant reminder of summer's lingering warmth and beauty in this picturesque locale. Such a generous sunlit display creates the perfect backdrop for outdoor adventures and serene moments in nature's embrace.

Monthly Sunshine Duration in Mount Shasta: August Highlighted

The August sunshine duration represents the total number of hours Mount Shasta experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec111h183h228h282h352h386h402h356h309h274h196h160h
Data source: Mount Shasta August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mount Shasta During August

August in Mount Shasta boasts an impressive 87% chance of sunny weather, making it one of the sunniest months of the year. This trend reflects a steady increase in sunshine opportunities as summer progresses, starting from a modest 26% in January and gradually rising through the months, with July reaching 84%. The warmth and brightness of August signify the peak of summer's embrace, inviting outdoor activities and vibrant community events. As the fall approaches, the likelihood of sunny days begins to taper off, underscoring August's unique position as a highlight of warmth and light in the region's climate.

Percentage of Sunny Days in August in Mount Shasta

The chart illustrates the percentage of sunny days in Mount Shasta throughout the year, with August 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 Mount Shasta experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec26%44%54%70%69%75%84%88%78%43%35%30%
Data source: Mount Shasta August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mount Shasta in August

In Mount Shasta, August marks a gradual transition from the sun-drenched days of summer to the crispness of autumn, with an average daylight duration of 13 hours. This slight decrease from July's peak of 14 hours indicates the beginning of nature's shift as daylight starts to wane. The month serves as a bridge, balancing the long, sun-filled days of June and July against the forthcoming shorter days of September, which averages 12 hours. As the year progresses, the daylight gradually fluctuates, hinting at the changing seasons that envelop this beautiful region.

Average Daylight Hours in Mount Shasta for August

The chart illustrates the variation in daylight duration in Mount Shasta throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 34m10h 38m11h 58m13h 21m14h 30m15h 5m14h 45m13h 43m12h 24m11h 2m9h 50m9h 14m
Data source: Mount Shasta daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Mount Shasta

In August, the average wind speed in Mount Shasta remains a gentle 1.9 m/s (4 mph), mirroring the calm breezes of July. This marks a subtle decline from the light winds experienced in the spring months, where speeds peaked slightly above 2.4 m/s in March and May. As summer draws to a close, the air becomes stiller, setting a serene backdrop for those enjoying the breathtaking landscape. Interestingly, the trend shows that the wind tends to pick up again in the fall, with September seeing a slight increase to 2.0 m/s. Overall, the summer months in Mount Shasta are characterized by tranquil winds, ideal for outdoor activities and appreciating nature's beauty.

Average August Wind Speed in Mount Shasta

The chart displays monthly wind speed patterns in Mount Shasta, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.32.42.12.42.21.91.9 m/s2.02.21.92.0
Data source: Mount Shasta August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Mount Shasta Compares to Other Months

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

August and January present stark contrasts in weather. In August, temperatures range from a minimum of 7°C (44°F) to a maximum of 37°C (98°F), with an average of 22°C (71°F), offering warm and dry conditions, as evidenced by only 9 mm (0.4 in) of precipitation over just 2 days. In sharp contrast, January experiences much colder temperatures, with a minimum of -19°C (-3°F) and a maximum of 14°C (58°F), resulting in a chilling average of 1°C (35°F). This month also sees significant rainfall, with 227 mm (8.9 in) of precipitation over 13 days, and a high humidity level of 86%. For more detailed weather insights, visit Mount Shasta weather in January.

The weather in August and February presents a stark contrast, showcasing the extremes of seasonal variation. August boasts a temperate range, with average temperatures reaching up to 22°C (71°F) and highs soaring as high as 37°C (98°F). It typically experiences low precipitation, with just 9 mm (0.4 in) over only 2 days and lower humidity levels of 42%. In sharp contrast, February brings much colder conditions, where temperatures often plummet to a minimum of -13°C (8°F) and average around 2°C (36°F). This month tends to be quite wet, with significant precipitation of 218 mm (8.6 in) over 11 days and higher humidity at 87%. For a deeper understanding of February weather specifics, you can explore more here: Mount Shasta weather in February.

The weather in August presents warm conditions, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 37°C (98°F), averaging around 22°C (71°F). This month experiences low precipitation at just 9 mm (0.4 in) over only 2 days, and humidity levels are relatively moderate at 42%. In contrast, March brings significantly colder temperatures, with a minimum of -15°C (6°F) and an average temperature of 3°C (38°F), peaking at 20°C (68°F). March is much wetter, with a substantial 204 mm (8.0 in) of precipitation spread over 16 days, contributing to a high humidity level of 86%. For a more detailed look at March weather specifically, check out Mount Shasta weather in March.

When comparing the weather in August and April, striking differences emerge. August features a wide temperature range with a minimum of 7°C (44°F), an average of 22°C (71°F), and a high of 37°C (98°F), accompanied by low precipitation of just 9 mm (0.4 in) over 2 days and a humidity level of 42%. In contrast, April experiences much cooler conditions, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 25°C (77°F). This month sees significantly higher precipitation at 121 mm (4.8 in) spread over 10 days, paired with a humidity level of 83%. For a detailed look at specific conditions, check out Mount Shasta weather in April.

When comparing the weather of August and May, a stark contrast is evident. August boasts a much warmer climate with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 37°C (98°F), and it enjoys relatively low precipitation at just 9 mm (0.4 in) over only 2 days, along with humidity levels of 42%. In contrast, May experiences cooler temperatures, with a minimum of -5°C (24°F) and a maximum of 30°C (86°F), significantly higher precipitation totaling 87 mm (3.4 in) over 9 days, and a higher humidity level of 72%. For more specific details on May weather, you can visit Mount Shasta weather in May.

When comparing the weather in August and June, distinct differences emerge. August experiences a more extreme temperature range, with minimum temperatures of 7°C (44°F) and maximums reaching 37°C (98°F), while June's temperatures are milder, ranging from a chilly 0°C (32°F) to a maximum of 35°C (96°F). Additionally, August benefits from lower precipitation, with only 9 mm (0.4 in) over 2 days and humidity at a comfortable 42%. In contrast, June sees more rainfall, totaling 27 mm (1.1 in) across 4 days, and higher humidity levels at 67%. For those interested in the specifics of June's climate, more details can be found here: Mount Shasta weather in June.

When comparing the weather of July and August, both months feature similar maximum temperatures, peaking at 37°C (98°F) in August and 37°C (99°F) in July. However, August tends to be slightly cooler on average with a mean temperature of 22°C (71°F), while July has an average of 23°C (73°F). Notably, August experiences a drop in humidity, averaging 42% compared to July's higher 56%. Precipitation is relatively low in both months, but August records a bit more with 9 mm over two days, in contrast to July’s 5 mm over just one day. For more specific insights into July’s conditions, you can check the detailed information here: Mount Shasta weather in July.

In comparing the weather between August and September, we can observe a significant shift in temperature and precipitation patterns. August tends to be warmer, with an average temperature of 22°C (71°F) and maximum highs reaching up to 37°C (98°F), while September sees a drop in average temperature to 17°C (63°F) and a minimum of -1°C (30°F). Precipitation also increases from just 9 mm (0.4 in) over 2 days in August to 23 mm (0.9 in) across 4 days in September. Additionally, humidity rises slightly in September to 46%, compared to 42% in August. For more details on weather during September, you can check Mount Shasta weather in September.

August experiences warm temperatures with a minimum of 7°C (44°F) and an average of 22°C (71°F), peaking at 37°C (98°F). The month is relatively dry, receiving only 9 mm (0.4 in) of precipitation over 2 days, and boasts a lower humidity level of 42%. In contrast, October brings a significant change in weather, with minimum temperatures dipping to -4°C (25°F) and an average of just 10°C (51°F), while the maximum temperature reaches 31°C (87°F). This month is much wetter, with 76 mm (3.0 in) of precipitation recorded over 5 days, leading to an increased humidity of 67%. For more details on the weather in October, check out Mount Shasta weather in October.

The weather in August and November presents a stark contrast, with August boasting a much warmer climate characterized by average temperatures around 22°C (71°F) and maximums reaching up to 37°C (98°F). In this summer month, rainfall is minimal, averaging only 9 mm (0.4 in) over just two days, and the humidity levels are relatively low at 42%. In contrast, November experiences significantly colder temperatures, with an average of 5°C (42°F) and minimums plunging to -14°C (7°F). This month also sees a considerable increase in precipitation, with 128 mm (5.1 in) falling over nine days, contributing to a much higher humidity of 86%. For more details about the conditions during this time, visit Mount Shasta weather in November.

August and December present starkly contrasting weather conditions. In August, temperatures range from a comfortable minimum of 7°C (44°F) to a scorching maximum of 37°C (98°F), with an average of 22°C (71°F) and minimal precipitation of just 9 mm (0.4 in) over 2 days. The humidity is relatively low at 42%, creating warm and dry summer days. In contrast, December brings much cooler temperatures, with a minimum of -10°C (14°F), an average of just 1°C (34°F), and a maximum of 17°C (63°F). This winter month sees significant precipitation, totaling 153 mm (6.0 in) across 12 days, and a high humidity level of 86%, resulting in a damp and chilly atmosphere. For those interested in detailed weather statistics, you can find more about Mount Shasta weather in December.

Compare Mount Shasta's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Mount Shasta

In August, Mount Shasta experiences a delightful shift in weather compared to other months, boasting warm maximum temperatures peaking at 37°C (98°F) while averaging a pleasant 22°C (71°F). The days are mostly dry, with only 2 days of light precipitation resulting in a mere 9 mm (0.4 in) of rain, which fosters a bright and inviting atmosphere. With humidity around 42%, visitors can enjoy the sun-drenched landscapes without feeling overwhelmed by sticky air. This inviting summer climate distinctly contrasts with the cooler, wetter months, making August a perfect time to explore Mount Shasta's natural beauty. For more insights on what to expect throughout the year, check out Mount Shasta Climate.