Climate averages 1991–2020
Fort Collins weather
in June.
A warm, moderately wet month: the 3rd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Fort Collins: daytime highs average 25.6°C and nights cool to about 11.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 54 mm of rain on roughly 9 days, which makes June a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 01 min on an average June day.
The nearest other city in this atlas is Loveland (21 km away). In June its highs average 25.7°C, about as warm as Fort Collins, with 54 mm of rain.
Among the 498 cities listed in the United States, Fort Collins ranks joint 348th of 498 for the warmest June highs and joint 173rd of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; Fort Collins is 2.3°C cooler than that mean.
From June to July, average highs rise by 3.6°C to 29.3°C, and monthly rainfall falls from 54 mm to 44 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Fort Collins climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.6°C-8.2°C | -8.2°C | 16 | 4.0 | 9.610 h |
| February | 5.7°C-7.5°C | -7.5°C | 18 | 4.9 | 10.611 h |
| March | 10.7°C-4.1°C | -4.1°C | 38 | 6.9 | 11.912 h |
| April | 14.5°C0.3°C | 0.3°C | 64 | 9.6 | 13.313 h |
| May | 19.5°C5.6°C | 5.6°C | 87 | 11.6 | 14.414 h |
| June, selected | 25.6°C11.1°C | 11.1°C | 54 | 8.6 | 15.015 h |
| July | 29.3°C14.7°C | 14.7°C | 44 | 7.6 | 14.815 h |
| August | 28.2°C14.0°C | 14.0°C | 37 | 6.6 | 13.814 h |
| September | 23.8°C9.6°C | 9.6°C | 39 | 5.8 | 12.513 h |
| October | 16.3°C2.9°C | 2.9°C | 40 | 6.9 | 11.211 h |
| November | 9.1°C-3.7°C | -3.7°C | 26 | 5.3 | 10.010 h |
| December | 4.2°C-7.8°C | -7.8°C | 16 | 3.8 | 9.39 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Loveland in JuneUnited States · 21 kmHigh 25.7°C · Low 11.0°C · 54 mm rain
- Greeley in JuneUnited States · 36 kmHigh 28.3°C · Low 13.3°C · 40 mm rain
- Longmont in JuneUnited States · 47 kmHigh 26.0°C · Low 11.4°C · 53 mm rain
- Boulder in JuneUnited States · 65 kmHigh 25.6°C · Low 10.8°C · 77 mm rain
- Thornton in JuneUnited States · 80 kmHigh 25.9°C · Low 10.8°C · 52 mm rain
- Westminster (Colorado), United States in JuneUnited States · 83 kmHigh 26.1°C · Low 10.8°C · 52 mm rain
- Arvada in JuneUnited States · 87 kmHigh 25.9°C · Low 10.7°C · 52 mm rain
- Denver in JuneUnited States · 94 kmHigh 26.2°C · Low 10.9°C · 52 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Fort Collins) is explained once on the Fort Collins year overview and on the Sources, method and limits page.
Loveland lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.