Ben Lomond, CA climate
Ben Lomond has warm winters and pleasant summers. A typical July afternoon reaches 79°, a January night drops to 40°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Ben Lomond feels like
Winter
Spring
Summer
Fall
Ben Lomond 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 | 59° | 40° | 8.8" | 0 | 11 | 0 | 46° – 55° |
| February | 60° | 41° | 8.2" | 0 | 11 | 0 | 47° – 56° |
| March | 63° | 41° | 6.4" | 0 | 10 | 0 | 47° – 58° |
| April | 65° | 42° | 2.9" | 0 | 6 | 0 | 50° – 58° |
| May | 70° | 46° | 1.1" | 0 | 4 | 0 | 53° – 62° |
| June | 76° | 49° | 0.3" | 0 | 1 | 0 | 58° – 65° |
| July | 79° | 52° | 0.0" | 0 | 1 | 0 | 62° – 69° |
| August | 81° | 53° | 0.0" | 0 | 1 | 0 | 64° – 71° |
| September | 80° | 53° | 0.1" | 0 | 1 | 0 | 63° – 71° |
| October | 74° | 49° | 1.8" | 0 | 4 | 0 | 59° – 67° |
| November | 65° | 43° | 4.3" | 0 | 7 | 0 | 48° – 58° |
| December | 59° | 40° | 8.7" | 0 | 10 | 0 | 46° – 53° |
| Year | 69° | 46° | 42.6" | 0.0" | 65 | 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 Ben Lomond
Ben Lomond gets 43 inches of rain and melted snow a year. January is the wettest month and August the driest. Rain or snow falls on about 65 days a year.
About 323 frost-free days a year
In half of years the last 32° night comes by January 29 and the first one by December 13. That leaves about 323 frost-free days for gardens, longer than 96% of U.S. towns.
Heating and cooling a home in Ben Lomond
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Ben Lomond, 93% of that work is heating and 7% is cooling, so the furnace matters far more than the air conditioner.
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.
Ben Lomond and its neighbors
Ben Lomond borders 5 towns with climate data. January nights across them vary by 2.4°. Lompico has both the coldest January nights (39°) and the hottest July afternoons (81°). Ben Lomond’s January low is 40° and its July high 79°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Ben Lomond 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 Ben Lomond averaged 1.8° warmer than the 1900s. The biggest change is in January (+2.4°). The shift is larger than in 88% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Ben Lomond’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 47° to 58°. December is the most reliable, staying within 7°.
Common questions about Ben Lomond’s climate
What is the coldest month in Ben Lomond?
December, with a typical high of 59° and a low of 40°.
What is the hottest month in Ben Lomond?
August, with a typical high of 81° and a low of 53°. About 6 days a year reach 90°.
How much snow does Ben Lomond get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Ben Lomond?
In half of years the first 32° night comes by December 13, and the last spring frost by January 29.
What is the rainiest month in Ben Lomond?
January, with 8.8 inches of rain and melted snow. The year totals 43 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Ben Lomond itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Santa Cruz, CA (8 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.