30-year climate normals
Larimer County Climate and Weather Averages
Hottest month — July
74.3°average daily high. The coldest month is February, averaging a low of 10.0°F.
Larimer County gets 20.57" of precipitation a year and 173.8" of snow, and 35% of it falls in Mar, Apr, May.
Temperature through the year
Each bar spans the average daily low to the average daily high for that month.
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| January | 31.0° | 10.8° | 1.23" | 16.2" |
| February | 32.7° | 10.0° | 1.52" | 20.0" |
| March | 40.1° | 15.3° | 2.26" | 28.5" |
| April | 45.1° | 20.0° | 2.61" | 35.7" |
| May | 55.3° | 28.0° | 2.28" | 14.8" |
| June | 68.1° | 36.4° | 1.36" | 1.6" |
| July | 74.3° | 42.8° | 1.95" | 0.0" |
| August | 71.6° | 41.1° | 1.74" | 0.0" |
| September | 64.8° | 34.3° | 1.57" | 2.5" |
| October | 51.3° | 25.5° | 1.36" | 13.6" |
| November | 39.0° | 17.7° | 1.34" | 21.4" |
| December | 31.0° | 10.8° | 1.35" | 19.5" |
Rainfall by month
Precipitation is spread fairly evenly through the year here, with 35% falling in the wettest three months (Mar, Apr, May).
What this climate costs you
Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.
These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Larimer County, where electricity is one line of eight.
Common questions
What is the weather like in Larimer County?
Larimer County averages a high of 74.3°F in July and a low of 10.0°F in February. Annual precipitation is 20.57 inches, including 173.8 inches of snow.
When is the rainy season in Larimer County?
The wettest stretch is Mar, Apr, May, which accounts for 35% of the year's precipitation. Precipitation is relatively evenly distributed across the year.
How hot does it get in Larimer County?
The average daily high in July, the hottest month, is 74.3°F. That drives 6 cooling degree days a year, which is what your air conditioning has to work against.
Does it snow in Larimer County?
Yes. Larimer County averages 173.8 inches of snow a year.
Sources
- Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station HOURGLASS RSVR, CO US (USC00054135), 9.2 miles from the county centroid.
- Heating and cooling degree days — NOAA, same station and period.
- Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Colorado residential average.
- Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.