Ben Lomond, CA Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Ben Lomond's primary NOAA station, BEN LOMOND #4.
The climate verdict for Ben Lomond
Water is the standout signal in Ben Lomond, California: 49.6 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 60°F. It scores 93/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 93% of them.
- 60°F
- yearly average temperature, NOAA normal
- 93/100
- comfort score, above 93% of station-mapped location scores
- 49.6"
- yearly precipitation total
- 231 days
- growing season, frost-free days
Ben Lomond: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00040673 · Ben Lomond, CA 60°F mean · 49.6" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 60°F
- RANK-UPPER #5,214
- PHOTO-FINISH ≈ King City
- PRCP-MID 49.6"
- SWING-NARROW 20°F
- COMF-TOP 93/100
- LOAD-HEAT 2,286 HDD
- STN-1 USC00040673
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: King City, CA ( -0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every CA station list.
- Hot San Jose, CA 61°F
- Ben Lomond (this station) 60°F
- Cold Cachuma Lake, CA 60°F
- Near King City, CA 60°F
- Near Napa State Hosp…, CA 60°F
Climate Living Index · Ben Lomond
Ben Lomond: 81/100 · grade B
Ben Lomond publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Ben Lomond, not an official NOAA rating. Rankings still use Comfort Score 93/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 8 calendar days | 100/100 · A |
| Snowfall burden | 0.1 inches/year | 89/100 · A |
| Frost-free season | 231 days/year | 81/100 · B |
| Annual temperature balance | 60.4°F · 7.1° from 67.5°F | 78/100 · B |
| Precipitation balance | 49.6 in · 14.6 from 35 in | 49/100 · D |
Ben Lomond · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Ben Lomond is a temperate Köppen climate: Csb
Coldest-month mean 50.2°F and warmest-month mean 70.2°F place this station in temperate, dry-summer, warm summer climates (Csb). Class Csb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, warm summer.
- Köppen code
- Csb
- Group
- Temperate
- Warmest month
- 70.2°F
- Coldest month
- 50.2°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Ben Lomond sits across the climate record
Three NOAA fields for Ben Lomond's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 24% warmest
- Among 6,861 stations, Ben Lomond sits in the warmer third of annual means.
- Annual precipitation
- Top 20% wettest
- Ben Lomond's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 97%
- Warmest-to-coldest month gap for Ben Lomond is compact versus 6,861 complete station-years.
How Ben Lomond compares across U.S. station-mapped locations
Ben Lomond's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
93 Top 7% score exceeds 93% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Ben Lomond's measured station temperature trend
MethodologyAcross 38 complete annual observations from 1975 to 2022, BEN LOMOND #4 warmed at a fitted rate of 0.06°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Ben Lomond primary station fitted change +0.06 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 65°F (18°C) | 37°F (3°C) | 51°F (11°C) | 10.4" | 0.0" | 9.3 | 0.0 |
| February | 67°F (19°C) | 39°F (4°C) | 53°F (12°C) | 9.7" | 0.1" | 5.7 | 0.0 |
| March | 71°F (21°C) | 41°F (5°C) | 56°F (13°C) | 7.0" | 0.0" | 3.7 | 0.5 |
| April | 75°F (24°C) | 42°F (5°C) | 59°F (15°C) | 3.3" | 0.0" | 1.1 | 1.9 |
| May | 80°F (26°C) | 46°F (8°C) | 63°F (17°C) | 1.2" | 0.0" | 0.1 | 3.8 |
| June | 86°F (30°C) | 49°F (9°C) | 67°F (19°C) | 0.2" | 0.0" | 0.1 | 7.5 |
| July | 88°F (31°C) | 51°F (11°C) | 70°F (21°C) | 0.0" | 0.0" | 0.0 | 9.7 |
| August | 90°F (32°C) | 51°F (11°C) | 70°F (21°C) | 0.0" | 0.0" | 0.0 | 11.6 |
| September | 89°F (31°C) | 49°F (9°C) | 69°F (20°C) | 0.1" | 0.0" | 0.1 | 11.4 |
| October | 83°F (28°C) | 44°F (7°C) | 64°F (18°C) | 2.2" | 0.0" | 0.5 | 6.6 |
| November | 71°F (22°C) | 40°F (4°C) | 55°F (13°C) | 5.0" | 0.0" | 4.9 | 0.6 |
| December | 64°F (18°C) | 37°F (3°C) | 50°F (10°C) | 10.4" | 0.0" | 11.1 | 0.0 |
The year, day by day
The year in Ben Lomond runs from a mild 36°F around December 21 to 90°F at the peak near August 23, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from August 23 through August 30, covering 8 dates. The broader mild season, normal highs of 70°F or more, runs March 12 to November 18.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 36°F around December 21.
Where the wet dates fall
The likeliest wet date is February 11, when 41% of years recorded at least a hundredth of an inch. The driest is July 26 at 1%. Summed across the calendar, that is about 73 wet dates a year.
The widest day
September 2 carries the biggest normal gap between afternoon and dawn, 40°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Ben Lomond.
Where Ben Lomond Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 40°F, sharper than nine in ten ranked stations see.
Ben Lomond earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
12.2 days with precipitation
Snow: 0.1"
12.1 days with precipitation
10.0 days with precipitation
6.8 days with precipitation
4.1 days with precipitation
1.5 days with precipitation
0.3 days with precipitation
0.6 days with precipitation
1.1 days with precipitation
3.6 days with precipitation
7.6 days with precipitation
12.3 days with precipitation
Ben Lomond's wet season runs through the cold months
December, January and February carry 62% of the year's precipitation here, while June through August contribute 1%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows an unusually narrow 20°F seasonal spread.
- Wettest month
- December, 10.4"
- Driest month
- July, 0.0"
- Wettest three months
- December, January, February (62% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
When it rains in Ben Lomond, it arrives in quantity
49.6" of precipitation falls across only about 72 wet days here, averaging 0.69 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 72 a year, 20% of all days
- Average depth per wet day
- 0.69 inches
- Most wet days
- December, about 12
- Fewest wet days
- July, about 0
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Snow reaches Ben Lomond, but rarely amounts to much
The normals record 0.1 inches of snow a year here, most likely in February. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 0 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
November 11
50% probability date
Last Spring Freeze
March 25
50% probability date
Growing Season
231 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,286
Higher = more heating needed
Cooling Degree Days
641
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Ben Lomond on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (60°F here).
- Bagdad, AZ 60°F · 0.0°F off
- Chester, SC 60°F · 0.0°F off
- Cushing, OK 60°F · 0.0°F off
- Hollis, OK 60°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (49.6" here), excluding temperature-peer places.
- Murfreesboro, NC 49.6" · 0.0" off
- Lenoir, NC 49.7" · 0.0" off
- El Campo, TX 49.6" · 0.0" off
- Fitchburg, MA 49.6" · 0.0" off
Data-derived climate profile
How Ben Lomond's climate pattern fits together
heating led · wet · low swing
Heating is the larger measured load in Ben Lomond, at 2,286 degree days versus 641 for cooling. Unlike a strongly continental record, however, its 20.0°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Ben Lomond's frost-free season lasts about 231 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
Ben Lomond's 20.0°F seasonal spread is compact even though precipitation is abundant. August and December mark the typical warm and cold ends of the calendar. The annual average is 60°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
Alongside its heating load, Ben Lomond carries 49.6 inches of precipitation in a normal year, inside PlainClimate's wet range. Recorded annual snowfall is negligible. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Ben Lomond's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Ben Lomond, not an official NOAA class or a year-ahead forecast.
Questions about Ben Lomond's climate
How much rain does Ben Lomond get? ▼
How many days above 90°F does Ben Lomond get? ▼
How much energy does heating and cooling require in Ben Lomond? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Ben Lomond's primary station: BEN LOMOND #4 (USC00040673). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as a census-designated place (GEOID 0605332), not an incorporated municipality. Match rule for Ben Lomond: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Ben Lomond comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.