Lake Nacimiento, CA climate
Lake Nacimiento has mild winters and hot summers, with very little rain. A typical July afternoon reaches 92°, a January night drops to 36°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Lake Nacimiento feels like
Winter
Spring
Summer
Fall
Lake Nacimiento weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 62° | 36° | 4.2" | 0 | 7 | 0 | 45° – 54° |
| February | 64° | 37° | 3.7" | 0 | 8 | 0 | 46° – 55° |
| March | 68° | 40° | 3.4" | 0 | 7 | 0 | 48° – 60° |
| April | 72° | 42° | 1.1" | 0 | 4 | 0 | 52° – 61° |
| May | 79° | 46° | 0.5" | 0 | 2 | 0 | 57° – 68° |
| June | 87° | 50° | 0.1" | 0 | 1 | 0 | 63° – 73° |
| July | 92° | 53° | 0.0" | 0 | 0 | 0 | 69° – 78° |
| August | 93° | 53° | 0.0" | 0 | 0 | 0 | 69° – 77° |
| September | 89° | 51° | 0.1" | 0 | 1 | 0 | 66° – 73° |
| October | 80° | 45° | 0.7" | 0 | 2 | 0 | 59° – 68° |
| November | 69° | 39° | 1.5" | 0 | 4 | 0 | 47° – 58° |
| December | 61° | 35° | 3.1" | 0 | 7 | 0 | 45° – 52° |
| Year | 76° | 44° | 18.2" | 0.0" | 43 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Lake Nacimiento
Lake Nacimiento gets 18 inches of rain and melted snow a year. January is the wettest month and July the driest. Rain or snow falls on about 43 days a year.
About 213 frost-free days a year
In half of years the last 32° night comes by April 4 and the first one by November 5. That leaves about 213 frost-free days for gardens, longer than 79% of U.S. towns.
Heating and cooling a home in Lake Nacimiento
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Lake Nacimiento, 74% of that work is heating and 26% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Lake Nacimiento compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Lake Nacimiento averaged 1.7° warmer than the 1900s. The biggest change is in January (+2.5°). The shift is larger than in 79% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Lake Nacimiento’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 48° to 60°. September is the most reliable, staying within 7°.
Common questions about Lake Nacimiento’s climate
What is the coldest month in Lake Nacimiento?
December, with a typical high of 61° and a low of 35°.
What is the hottest month in Lake Nacimiento?
August, with a typical high of 93° and a low of 53°. About 92 days a year reach 90°.
How much snow does Lake Nacimiento get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Lake Nacimiento?
In half of years the first 32° night comes by November 5, and the last spring frost by April 4.
What is the rainiest month in Lake Nacimiento?
January, with 4.2 inches of rain and melted snow. The year totals 18 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Lake Nacimiento itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Paso Robles Municipal Airport, CA (14 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.