Weather in Boulder County, Colorado for June 2026
Red Flag Warning - See hour by hour.
Until now, June 2026 in Boulder County has been nearly identical to the historical average, with a temperature of 27.8 °F (showing only a slight deviation of 0.5 °F).
The forecast for the next days in Boulder County predicts temperatures to be around 33 °F, close to the historical average.
In general, the average temperature in Boulder County at the beginning of June is 25.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 31.1 °F by the end of June.
Boulder County experiences moderate rainfall in June, with an average of 8 rainy days and a total precipitation of 51.6 mm.
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Boulder County Weather June
Temperatures trend during June in Boulder County
June weather in Boulder County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jun. 1 |  Cloudy | 26° /9° | 0.2 mm | 9 | |
| Jun. 2 |  Patchy rain possible | 26° /10° | 2.9 mm | 8 | |
| Jun. 3 | Cloudy | 21° /9° | 19 mm | 7 | |
| Jun. 4 |  Overcast | 25° /10° | 1.8 mm | 8 | |
| Jun. 5 |  Sunny | 25° /11° | 4.7 mm | 8 | |
| Jun. 6 | Sunny | 26° /10° | 1.4 mm | 8 | |
| Jun. 7 | Overcast | 29° /12° | 0.6 mm | 9 | |
| Jun. 8 | Patchy rain possible | 23° /12° | 0.4 mm | 8 | |
| Jun. 9 |  Moderate or heavy rain shower | 26° /11° | 0.7 mm | 8 | |
| Jun. 10 | Sunny | 27° /12° | 0 mm | 8 | |
| Jun. 11 |  Partly cloudy | 27° /12° | 0 mm | 9 | |
| Jun. 12 | Cloudy | 31° /13° | 0 mm | 9 | |
| Jun. 13 | Cloudy | 29° /13° | 0.1 mm | 9 | |
| Jun. 14 | Moderate or heavy rain shower | 26° /14° | 1.7 mm | 6 | |
| Jun. 15 | Moderate rain at times | 30° /12° | 0.2 mm | 9 | |
| Jun. 16 | Partly cloudy | 32° /12° | 0 mm | 9 | |
| Jun. 17 | Sunny | 30° /15° | 0 mm | 9 | |
| Jun. 18 | Sunny | 26° /11° | 0 mm | 8 | |
| Jun. 19 | Moderate or heavy rain shower | 28° /12° | 1.2 mm | 9 | |
| Jun. 20 | Patchy rain possible | 31° /13° | 0.1 mm | 9 | |
| Jun. 21 | Moderate or heavy rain shower | 29° /15° | 0.6 mm | 9 | |
| Jun. 22 | Partly cloudy | 29° /13° | 0 mm | 10 | |
| Jun. 23 | Partly cloudy | 26° /13° | 0.2 mm | 9 | |
| Jun. 24 | Cloudy | 27° /14° | 0.2 mm | 8 | |
| Jun. 25 | Partly cloudy | 27° /15° | 2.6 mm | 6 | |
| Jun. 26 | Sunny | 31° /11° | 0.1 mm | 9.2 | |
| Jun. 27 | Sunny | 34° /14° | 0 mm | 10.8 | |
| Jun. 28 | Sunny | 34° /13° | 0 mm | 11.2 | |
| Jun. 29 | Sunny | 33° /13° | 0 mm | 10.4 | |
| Jun. 30 | Sunny | 32° /11° | 0 mm | 0 | |
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Boulder County in June - FAQ
What are the expected maximum and minimum temperatures in Boulder County during June?
How much rainfall should be expected in Boulder County during June?
What are the typical wind conditions in Boulder County during June?
June rainfall patterns in Boulder County
UV exposure in Boulder County during June
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