Boulder, CO weather in June
June in Boulder: warm, with frequent rain. Highs 83°F, lows 51°F, about 10 days with rain. A good month for most outdoor plans.
- Normal high
- 83°F
- Normal low
- 51°F
- Wet days
- 10
- 1.9 in total
- Muggy days
- 0
- dew point 65°F+
How June changes from start to finish
| June 1 | June 30 | |
|---|---|---|
| Normal high | 78°F | 87°F |
| Normal low | 48°F | 55°F |
| Chance of a wet day | 38% | 32% |
| Sunrise / sunset | 5:34 am / 8:23 pm | 5:35 am / 8:34 pm |
| Daylight | 14.8 h | 15.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical June day
- 6 am59°Fdew point 45°F
- 9 am70°Fdew point 44°F
- Noon78°Fdew point 41°F
- 3 pm79°Fdew point 41°F
- 6 pm74°Fdew point 43°F
- 9 pm65°Fdew point 45°F
NOAA hourly normals (local standard time) from Denver Intl Airport (35 mi away); average wind 10 mph; clear or few clouds in 37% of daytime hours, mostly cloudy or overcast in 42%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F10 of 30
- Hot dayshigh 90°F or more6 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow10 of 30
- Notable rainat least 0.10 in5 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per June, counted from daily records for each year 1991-2020.
Rain in June
Normal precipitation is 1.9 in; a dry June brings about 1.0 in and a wet one about 2.7 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How June varies from year to year
- Warmest June, 1991-20202012: average high 91°F
- Coolest June1995: average high 76°F
- Wettest June1995: 4.0 in
- Driest June2007: 0.4 in
- Highest reading102°F (June 23, 2012)
- Lowest reading33°F (June 6, 1998)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
June compared with May and July
| May | June | July | |
|---|---|---|---|
| Normal high | 71°F | 83°F | 88°F |
| Normal low | 43°F | 51°F | 57°F |
| Wet days | 13 | 10 | 11 |
| Comfortable days | 18 | 10 | 3 |
| Daylight | 14.4 h | 15.0 h | 14.7 h |
Highs change by +12°F from May and +5°F into July.
Nearby alternatives in June
- Warmer: Pueblo, CO127 mi · high 89°F · 7 wet days
- Drier: Thornton, CO19 mi · high 84°F · 7 wet days
- Cooler: Estes Park, CO28 mi · high 72°F · 9 wet days
How Boulder ranks in June
- Normal high203rd warmest of 378 cities; 6th of 17 in Colorado
- Wet days187th driest of 378
- Comfortable days120th most of 340
What to pack for Boulder in June
- Layers – afternoons near 83°F but nights near 51°F
- A rain jacket or umbrella – rain on about 10 days
- Sunglasses and sunscreen – about 15.0 hours of daylight and highs near 83°F
Heating and cooling
June has 56 heating degree days and 110 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Boulder in June?
The normal high is 83°F and the normal low is 51°F. From 1991 to 2020 the hottest June reading was 102°F (June 23, 2012).
Does it rain a lot in Boulder in June?
About 10 days in June have at least 0.01 in of precipitation, and the normal total is 2.0 in. The wettest June in 1991-2020 was in 1995 (4.0 in); the driest was in 2007 (0.4 in).
Is June a good time to visit Boulder?
June ranks 3rd of 12 months on our comfort score for Boulder (66 out of 100). It has about 10 comfortable days and about 6 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Boulder (USC00050848), 1.6 mi S of the city center, 5,484 ft (165 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Denver Intl Airport (USW00003017), 35 mi ESE of the city center, 5,414 ft (95 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Aurora Buckley Fld ANGB (USW00023036), 35 mi SE of the city center, 5,663 ft (344 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Denver International Airport (725650-03017), 35 mi ESE of the city center, 5,404 ft (85 ft higher than the city). Hourly observations, 1991-2020.