Boulder County (Boulder)
July
Weather in Boulder County, Colorado for July 2026
Your guide to Boulder County weather in July - trends and predictions
In general, the average temperature in Boulder County at the beginning of July is 28.6 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 30.7 °F by the end of July.
Boulder County experiences moderate rainfall in July, with an average of 10 rainy days and a total precipitation of 37.1 mm.
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Temperatures
Rain 🌧️
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21
Dry days
10
Rainy days
0
Snow days
29°/15°
Temperatures
20 km/h
Avg max wind
34 %
Avg humidity
Boulder County Weather July
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Temperatures trend during July in Boulder County
See the weather trend as well as the moving average line
July weather in Boulder County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Cloudy | 28° /16° | 0 mm | 6 | |
| Jul. 2 | Cloudy | 30° /15° | 0.6 mm | 7 | |
| Jul. 3 |  Sunny | 31° /14° | 0 mm | 8 | |
| Jul. 4 |  Partly cloudy | 28° /13° | 0 mm | 8 | |
| Jul. 5 | Partly cloudy | 27° /14° | 0 mm | 7 | |
| Jul. 6 | Sunny | 30° /16° | 0 mm | 8 | |
| Jul. 7 |  Patchy rain possible | 26° /12° | 0.3 mm | 7 | |
| Jul. 8 | Sunny | 29° /13° | 0 mm | 8 | |
| Jul. 9 | Cloudy | 31° /17° | 0 mm | 8 | |
| Jul. 10 |  Overcast | 31° /15° | 1.5 mm | 7 | |
| Jul. 11 | Cloudy | 30° /14° | 0 mm | 7 | |
| Jul. 12 | Sunny | 30° /14° | 0 mm | 7 | |
| Jul. 13 | Cloudy | 33° /18° | 0 mm | 8 | |
| Jul. 14 | Partly cloudy | 32° /19° | 0 mm | 8 | |
| Jul. 15 | Patchy rain possible | 33° /19° | 0.3 mm | 8 | |
| Jul. 16 |  Moderate rain at times | 28° /16° | 2.7 mm | 6 | |
| Jul. 17 | Patchy rain possible | 29° /15° | 6 mm | 7 | |
| Jul. 18 | Moderate or heavy rain shower | 30° /16° | 2.9 mm | 7 | |
| Jul. 19 | Overcast | 29° /17° | 0.4 mm | 7 | |
| Jul. 20 | Moderate rain at times | 30° /17° | 2.7 mm | 7 | |
| Jul. 21 | Moderate or heavy rain shower | 26° /16° | 7.5 mm | 7 | |
| Jul. 22 | Overcast | 29° /16° | 0.1 mm | 7 | |
| Jul. 23 | Sunny | 30° /17° | 0 mm | 8 | |
| Jul. 24 | Overcast | 27° /15° | 0 mm | 6 | |
| Jul. 25 | Sunny | 32° /15° | 0 mm | 8 | |
| Jul. 26 | Moderate or heavy rain shower | 29° /17° | 1.9 mm | 6 | |
| Jul. 27 | Moderate or heavy rain shower | 30° /16° | 1.3 mm | 7 | |
| Jul. 28 | Sunny | 32° /18° | 0 mm | 8 | |
| Jul. 29 | Sunny | 32° /17° | 0 mm | 8 | |
| Jul. 30 | Sunny | 28° /15° | 0.7 mm | 7 | |
| Jul. 31 | Sunny | 32° /18° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Boulder County in July is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Boulder County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Boulder County in July - FAQ
What are the expected maximum and minimum temperatures in Boulder County during July?
During July, expect a variety of temperatures with highs around 29° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Boulder County during July?
In July, Boulder County can expect light to moderate rainfall, totaling 37.1 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Boulder County during July?
The average wind speed in Boulder County during July is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Boulder County
Explore the daily rainfall trends and prepare for Boulder Countys July weather 💧
UV exposure in Boulder County during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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