30-year climate normals
Alpine County Climate and Weather Averages
Hottest month: July
80.4°average daily high. The coldest month is December, averaging a low of 18.0°F.
Alpine County gets 20.46" of precipitation a year, and 49% of it falls in Dec, Jan, Feb.
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 |
|---|---|---|---|
| January | 42.8° | 18.4° | 2.81" |
| February | 43.4° | 19.3° | 3.75" |
| March | 47.8° | 23.7° | 2.87" |
| April | 53.2° | 27.6° | 1.27" |
| May | 62.1° | 33.2° | 1.32" |
| June | 72.0° | 38.1° | 0.55" |
| July | 80.4° | 42.5° | 0.39" |
| August | 79.7° | 41.0° | 0.36" |
| September | 73.4° | 35.4° | 0.28" |
| October | 62.2° | 29.2° | 1.43" |
| November | 50.9° | 23.3° | 1.94" |
| December | 42.8° | 18.0° | 3.49" |
Rainfall by month
Alpine County has a distinct wet season. 49% of the year's precipitation arrives in Dec, Jan, Feb.
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 Alpine County, where electricity is one line of eight.
Common questions
What is the weather like in Alpine County?
Alpine County averages a high of 80.4°F in July and a low of 18.0°F in December. Annual precipitation is 20.46 inches, with essentially no snow.
When is the rainy season in Alpine County?
The wettest stretch is Dec, Jan, Feb, which accounts for 49% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.
How hot does it get in Alpine County?
The average daily high in July, the hottest month, is 80.4°F. That drives 29 cooling degree days a year, which is what your air conditioning has to work against.
Does it snow in Alpine County?
The weather station used for Alpine County, SOUTH LAKE TAHOE AP, CA US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 20.46 inches above, measured as melted water.
Sources
- Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station SOUTH LAKE TAHOE AP, CA US (USW00093230), 21.8 miles from the county centroid.
- Heating and cooling degree days: NOAA, same station and period.
- Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
- Electricity price: US Energy Information Administration, Electric Power Monthly Table 5.6.A, California residential average.
- Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.