Last updated: February 24, 2025
August in Grand Junction, United States, brings a mix of warm temperatures and occasional rain. The month sees a maximum temperature soaring to a sizzling 36°C (97°F), while the average settles comfortably at 23°C (74°F). Nights offer a refreshing contrast with temperatures dipping to a cool 8°C (46°F). Precipitation is relatively light, with an accumulation of 29 mm (1.1 in) spread over 5 days, contributing to the area's 39% humidity. This combination of warmth and moderate rainfall fosters a vibrant late-summer atmosphere, making it an inviting time for outdoor activities.
In August, Grand Junction experiences a delightful summer warmth, with temperatures averaging a comfortable 23°C (74°F) and reaching daily highs of up to 36°C (97°F). The month marks a notable peak in the annual temperature trend, as it aligns with the hottest periods from June and July, where maximums frequently hit the upper 30s. The nights start to cool down slightly, with minimum temperatures around 8°C (46°F), offering a refreshing contrast to the daytime heat. As the summer begins to wane, August sets the stage for the transition into milder fall weather, yet it remains a peak time for outdoor activities and sun-soaked adventures in this vibrant region.
In August, Grand Junction experiences a noticeable dip in precipitation, with 29 mm (1.1 in) of rain falling over an average of just 5 days. This trend marks a continuation of the drier conditions seen in June and July, where rainfall amounts and days of precipitation were also relatively low. As the summer heat lingers, the city shifts from the more substantial spring downpours seen in March and April, where totals exceeded 60 mm, to a more tranquil weather pattern. Looking ahead to September, precipitation begins to rise again, suggesting a transition towards the wetter months of fall, with a forecast of around 40 mm on the horizon. Overall, August serves as a bridge in Grand Junction's climate, linking the dryness of summer to the impending revitalization of autumn rains.
In August, Grand Junction experiences a continuation of its dry summer with humidity levels at a low 39%, a figure consistent with July's readings. This drop from the moist depths of winter—where humidity hovers around 90% in January and December—illustrates a clear trend towards drier conditions as the year progresses. As the seasons shift, humidity begins to rise again in September, offering a hint of moisture after the peak summer heat. This rhythmic fluctuation showcases the region's transition from the cozy, humidity-laden winter months to the arid, sun-soaked days of summer, ultimately illustrating Grand Junction's dynamic climate.
In August, Grand Junction experiences an extreme UV Index of 11, indicating a high risk of harm from unprotected sun exposure. As the summer months peak, the burn time decreases to just 10 minutes, mirroring the intensity seen in June and July. This trend showcases a sustained risk throughout the summer, where UV levels reach their highest points before gradually tapering off in September. With careful planning and protective measures, residents and visitors can enjoy the sun safely as they navigate these elevated UV levels. For more detailed information, visit Grand Junction UV Index.
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As summer draws to a close, August in Grand Junction showcases a remarkable 359 hours of sunshine, making it one of the sunniest months of the year. This vibrant burst of sunlight follows the peak of July, which also boasts 382 hours of radiant rays, but the slight dip in August still maintains a lively atmosphere, perfect for outdoor adventures. Interestingly, the sunshine trend highlights a gradual increase from the winter months, with January's mere 172 hours transitioning into the dazzling spring and summer periods. The warm embrace of sunlight begins to taper off in September, signaling the arrival of autumn. Overall, the consistent sunshine not only invigorates the spirit but also underscores Grand Junction's charm as a sunny destination throughout the seasons.
August in Grand Junction, United States, boasts an impressive 73% chance of sunny weather, making it one of the sunniest months of the year. This trend follows a steady increase in sunshine from earlier months, peaking in late summer and setting the stage for an enjoyable outdoor experience. Notably, June starts the sunshine surge at 68%, and while July sees a slight dip to 55%, the arrival of August brings a welcome revival in sun-filled days. With September maintaining a high of 75%, it's clear that summer's golden glow continues to linger, offering residents and visitors alike the perfect backdrop for activities amidst the stunning Colorado landscapes.
As the summer sun begins its slow retreat in August, Grand Junction enjoys a generous 13 hours of daylight, slightly less than the peak of 14 hours experienced in the preceding months. This subtle shift marks the transition towards fall, with daylight gradually diminishing as the year progresses. Notably, the length of daylight has steadily increased from a modest 9 hours in January to the summer highs, before starting to wane again into September. August serves as a bridge, allowing residents to savor the lingering warmth of summer days while anticipating the rich hues of the coming autumn.
In August, Grand Junction experiences a gentle breeze, with an average wind speed of 2.0 m/s (4 mph). This marks a slight dip from the spring's more lively winds, reflecting the transitional nature of summer to autumn. The wind speeds have gradually increased from 1.6 m/s in January to a peak of 2.5 m/s in May, before tapering off through the warmer months. While the wind remains relatively calm in August, it does not stray far from the consistent patterns seen in the previous months. As the region welcomes the cooler autumn air, the winds maintain their moderate character, setting the stage for the seasonal shift ahead.
The weather in Grand Junction 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 Grand Junction and find detailed weather information for every month.
In August, the weather is significantly warmer, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 36°C (97°F) and an average of 23°C (74°F). The month experiences relatively low precipitation, with only 29 mm (1.1 in) over about 5 days, and humidity levels are a comfortable 39%. In contrast, January brings much colder conditions, with temperatures plunging to a minimum of -23°C (-9°F) and averaging -4°C (24°F), peaking at just 12°C (54°F). This winter month experiences higher precipitation at 40 mm (1.6 in) across 7 days, coupled with significantly higher humidity levels at 90%. For a closer look at the winter climate, check Grand Junction weather in January.
The weather in August and February presents a stark contrast, showcasing the extremes of seasonal variations. August typically enjoys milder temperatures, with an average of 23°C (74°F) and highs reaching up to 36°C (97°F), accompanied by relatively low humidity at 39%. In contrast, February features frigid conditions, with average temperatures around -2°C (29°F) and lows plummeting to -23°C (-10°F). Additionally, February experiences more precipitation over more days, with 49 mm (1.9 in) falling over nine days and a high humidity level of 89%. For more detailed insights on February weather, you can check out Grand Junction weather in February.
August and March present stark contrasts in weather. In August, temperatures range from a mild 8°C (46°F) at night to a scorching high of 36°C (97°F) during the day, typically showcasing an average of 23°C (74°F). The month sees relatively low precipitation at 29 mm (1.1 in) over just 5 days, and low humidity at 39%, providing a warm and dry climate. Conversely, March experiences a more frigid atmosphere with temperatures dipping as low as -17°C (2°F) and averaging just 4°C (39°F), peaking at 23°C (74°F). It is a wetter month with 69 mm (2.7 in) of precipitation spread over 11 days, and high humidity at 81%, contributing to a much more overcast and chilly environment. For more details about the weather in March, you can visit Grand Junction weather in March.
August weather in Grand Junction tends to be significantly warmer than in April, with average temperatures around 23°C (74°F) compared to April's 9°C (49°F). While August can reach a maximum of 36°C (97°F), April features a milder maximum of 27°C (81°F). Additionally, August experiences lower humidity levels at 39%, contrasting sharply with April's more humid conditions at 74%. Both months see some precipitation, with August averaging 29 mm over 5 days and April slightly higher at 33 mm over 8 days. For more details on April's climate, visit Grand Junction weather in April.
In comparing the weather of August and May, it's clear that August tends to be warmer overall. While May experiences lower temperatures, ranging from a chilly -3°C (27°F) at night to a pleasantly warm 32°C (90°F) during the day, August showcases a wider range with minimums of 8°C (46°F) and maximums soaring up to 36°C (97°F). Humidity levels are also notably different; August has a lower humidity of 39%, making the heat more bearable, while May is more humid at 58%, contributing to a different sensory experience. Additionally, August receives less precipitation, with only about 29 mm (1.1 in) over 5 days, compared to May's 42 mm (1.7 in) over 8 days. For more detailed insights on May's climate, visit Grand Junction weather in May.
When comparing the weather in June and August, June tends to be slightly cooler overall, with average temperatures around 22°C (72°F) and a minimum of 2°C (37°F), while August boasts a warmer average of 23°C (74°F) and a minimum of 8°C (46°F). Despite sharing similar maximum temperatures—with June peaking at 38°C (100°F) and August reaching 36°C (97°F)—June has a higher humidity level at 47% compared to August's 39%. Both months experience negligible precipitation, with June receiving 26 mm over 4 days and August slightly higher at 29 mm over 5 days. For more detailed information, you can visit Grand Junction weather in June.
August weather tends to be slightly cooler than July, with average temperatures dropping from 25°C (77°F) in July to 23°C (74°F) in August. The maximum temperature in August is also a bit lower at 36°C (97°F), compared to July's peak of 38°C (101°F). While both months experience the same humidity level of 39%, July sees more precipitation, totaling 34 mm (1.3 in) over 7 days compared to August's 29 mm (1.1 in) over 5 days. For a detailed look at July's weather patterns, check out Grand Junction weather in July.
August typically brings warmer weather with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 36°C (97°F), accompanied by relatively low humidity at 39%. With an average temperature of 23°C (74°F) and only 29 mm (1.1 in) of precipitation over about 5 days, it remains a drier month. In contrast, September sees a noticeable drop in minimum temperatures, reaching as low as 0°C (33°F), while the average temperature decreases to 19°C (66°F). Despite the still-warm maximum of 35°C (96°F), September experiences higher humidity at 53% and increased precipitation, totaling 40 mm (1.6 in) over 6 days. For more details on September’s climate, you can visit Grand Junction weather in September.
August and October exhibit stark contrasts in weather. In August, temperatures range from a mild 8°C (46°F) at night to a sweltering 36°C (97°F) during the day, with an average of 23°C (74°F). It experiences relatively low humidity at 39% and minimal rainfall of 29 mm (1.1 in) over just five days. In contrast, October sees much cooler temperatures, with a minimum of -14°C (7°F) and an average of 9°C (49°F), peaking at 27°C (81°F). This month is significantly wetter, receiving 55 mm (2.2 in) of precipitation across eight days, and humidity rises to 72%. For more detailed insights into October's weather patterns, you can find additional information here: Grand Junction weather in October.
August and November present stark contrasts in weather conditions. In August, temperatures range from a mild 8°C (46°F) at night to a sweltering 36°C (97°F) during the day, with average temperatures around 23°C (74°F). The month sees relatively low precipitation at 29 mm (1.1 in) across about 5 days, accompanied by low humidity levels at 39%. In contrast, November brings a much chillier climate, with nighttime lows plunging to -16°C (4°F) and average temperatures dropping to just 4°C (39°F). Maximum temperatures are more moderate at 20°C (68°F), and while precipitation is slightly less at 23 mm (0.9 in) over 4 days, humidity spikes significantly to 84%. For a closer look at what to expect during November, you can visit Grand Junction weather in November.
In August, the weather is characterized by warm temperatures, with averages around 23°C (74°F) and highs reaching up to 36°C (97°F), offering a stark contrast to December's notably colder climate. While August sees only 29 mm (1.1 in) of precipitation spread over five days, December experiences more rainfall at 37 mm (1.5 in) across seven days, resulting in a significantly higher humidity level of 90%. Overall, August boasts a sunny atmosphere ideal for outdoor activities, while December presents a frigid environment perfect for winter sports and cozy indoor gatherings. For more specifics on December weather in Grand Junction, you can visit Grand Junction weather in December.
As August rolls into Grand Junction, the heat intensifies with maximum temperatures peaking at a sizzling 36°C (97°F), which is a distinct contrast to the cooler months of spring and fall. This month typically enjoys a warmer average temperature around 23°C (74°F), accompanied by lower humidity levels at 39%, making for dry and pleasant conditions. Unlike the more precipitation-prone summer months which often see heavy showers, August brings only a few light rain days, accumulating about 29 mm (1.1 in) of rain over just five days. This blend of warm weather and occasional light rain makes August a unique time to experience the vibrant beauty of Grand Junction. For more in-depth weather trends, check out Grand Junction Climate.