Climate normals · 1970–2000
Longmont Climate
Longmont is a city in United States (CO) with a population of about 92,088. Its average annual temperature is 9.7°C (49°F), with roughly 422 mm of rain per year.
9.7°C
Avg Temp
422
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
Longmont Climate
Longmont has an average annual temperature of 9.7°C (49°F) and receives about 422 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.7°C
Avg Temp
422
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -2° / 28° | 13 mm |
| February | 1° / 33° | 13 mm |
| March | 4° / 40° | 40 mm |
| April | 9° / 47° | 53 mm |
| May | 14° / 57° | 68 mm |
| June | 19° / 66° | 48 mm |
| July | 22° / 72° | 45 mm |
| August | 21° / 70° | 36 mm |
| September | 16° / 61° | 37 mm |
| October | 10° / 50° | 27 mm |
| November | 3° / 37° | 27 mm |
| December | -1° / 30° | 15 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Longmont
The most comfortable months to visit Longmont are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near -10°C low). May is usually the wettest month.
Where to stay near Longmont
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Frequently Asked Questions
The most comfortable months to visit Longmont are typically August, July and June, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Longmont, United States has an average annual temperature of 9.7°C and about 422 mm of precipitation per year. The warmest month is July and the coldest is January.
In July, the hottest month, daily highs in Longmont average about 31°C (88°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.