Gibraltar Dam, CA Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Gibraltar Dam's primary NOAA station, GIBRALTAR DAM #2.
The climate verdict for Gibraltar Dam
A compact 26.1°F seasonal swing gives Gibraltar Dam, California a steadier-than-extreme annual shape. NOAA reports an annual average of 61°F. It scores 96/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 96% of them.
- 61°F
- annual average temperature (NOAA normal)
- 96/100
- comfort score, above 96% of station-mapped location scores
- 28.6"
- precipitation, annual total
- 252 days
- frost-free days per growing season
Gibraltar Dam: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00043402 · Gibraltar Dam, CA 61°F mean · 28.6" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 61°F
- RANK-UPPER #5,352
- PHOTO-FINISH ≈ Ramona
- PRCP-MID 28.6"
- SWING-NARROW 26°F
- COMF-TOP 96/100
- LOAD-HEAT 2,361 HDD
- STN-1 USC00043402
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Ramona, CA ( -0.2 °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 Cloverdale, CA 62°F
- Near Fairfield, CA 62°F
- Gibraltar Dam (this station) 61°F
- Cold Saint Helena, CA 61°F
- Near Ramona, CA 61°F
Climate Living Index · Gibraltar Dam
Gibraltar Dam: 80/100 · grade B
Gibraltar Dam publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Gibraltar Dam, not an official NOAA rating. Rankings still use Comfort Score 96/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 252 days/year | 90/100 · A |
| Annual temperature balance | 61.4°F · 6.1° from 67.5°F | 81/100 · B |
| Normal heat + freeze calendar | 92 calendar days | 78/100 · B |
| Precipitation balance | 28.6 in · 6.4 from 35 in | 77/100 · B |
Gibraltar Dam · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Gibraltar Dam is a temperate Köppen climate: Csa
Coldest-month mean 48.9°F and warmest-month mean 75.0°F place this station in temperate, dry-summer, hot summer climates (Csa). Class Csa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, hot summer.
- Köppen code
- Csa
- Group
- Temperate
- Warmest month
- 75.0°F
- Coldest month
- 48.9°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 Gibraltar Dam sits across the climate record
Three NOAA fields for Gibraltar Dam's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 22% warmest
- Among 6,861 stations, Gibraltar Dam sits in the warmer third of annual means.
- Annual precipitation
- 38th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 94%
- Warmest-to-coldest month gap for Gibraltar Dam is compact versus 6,861 complete station-years.
How Gibraltar Dam compares across U.S. station-mapped locations
Gibraltar Dam's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
96 Top 4% score exceeds 96% 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 66°F (19°C) | 36°F (2°C) | 51°F (11°C) | 7.1" | 9.0 | 0.0 |
| February | 67°F (19°C) | 36°F (2°C) | 52°F (11°C) | 7.6" | 9.4 | 0.0 |
| March | 70°F (21°C) | 38°F (4°C) | 54°F (12°C) | 4.7" | 3.4 | 0.9 |
| April | 76°F (24°C) | 41°F (5°C) | 58°F (15°C) | 1.6" | 1.5 | 2.3 |
| May | 80°F (27°C) | 46°F (8°C) | 63°F (17°C) | 0.7" | 0.0 | 6.3 |
| June | 88°F (31°C) | 49°F (9°C) | 69°F (20°C) | 0.1" | 0.0 | 14.7 |
| July | 94°F (34°C) | 55°F (13°C) | 74°F (24°C) | 0.1" | 0.0 | 24.3 |
| August | 96°F (35°C) | 54°F (12°C) | 75°F (24°C) | 0.0" | 0.0 | 26.4 |
| September | 91°F (33°C) | 51°F (11°C) | 71°F (22°C) | 0.1" | 0.0 | 20.4 |
| October | 83°F (29°C) | 45°F (7°C) | 64°F (18°C) | 1.1" | 0.3 | 11.2 |
| November | 73°F (23°C) | 40°F (4°C) | 57°F (14°C) | 1.5" | 3.4 | 2.6 |
| December | 64°F (18°C) | 34°F (1°C) | 49°F (9°C) | 4.2" | 11.7 | 0.0 |
The year, day by day
The year in Gibraltar Dam runs from a mild 33°F around December 16 to 96°F at the peak near August 19, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 21 through September 20, covering 92 dates. The broader mild season, normal highs of 70°F or more, runs March 16 to November 23.
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 33°F around December 16.
Where the wet dates fall
The likeliest wet date is February 14, when 31% of years recorded at least a hundredth of an inch. The driest is August 2 at 1%. Summed across the calendar, that is about 41 wet dates a year.
The widest day
August 26 carries the biggest normal gap between afternoon and dawn, 42°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Gibraltar Dam.
Where Gibraltar Dam Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 42°F, sharper than nine in ten ranked stations see.
Heat is a defining feature of the normals calendar — the normal daily high reaches 90°F on roughly 92 days a year, more than four out of five ranked stations record.
Gibraltar Dam earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
7.9 days with precipitation
9.5 days with precipitation
6.1 days with precipitation
3.6 days with precipitation
1.9 days with precipitation
0.4 days with precipitation
0.3 days with precipitation
0.1 days with precipitation
0.6 days with precipitation
2.1 days with precipitation
3.2 days with precipitation
6.1 days with precipitation
Gibraltar Dam's wet season runs through the cold months
December, January and February carry 66% of the year's precipitation here, while June through August contribute 0%. 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 26.1°F seasonal spread.
- Wettest month
- February, 7.6"
- Driest month
- August, 0.0"
- Wettest three months
- February, January, March (67% 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 Gibraltar Dam, it arrives in quantity
28.6" of precipitation falls across only about 42 wet days here, averaging 0.68 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 42 a year, 11% of all days
- Average depth per wet day
- 0.68 inches
- Most wet days
- February, about 10
- Fewest wet days
- August, 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.
Frost Dates & Growing Season
First Fall Freeze
November 27
50% probability date
Last Spring Freeze
March 20
50% probability date
Growing Season
252 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,361
Higher = more heating needed
Cooling Degree Days
1,063
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Gibraltar Dam 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 (61°F here).
- Aberdeen, MS 61°F · 0.0°F off
- Atoka, OK 61°F · 0.0°F off
- Blanchard, OK 61°F · 0.0°F off
- Charlotte, NC 61°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (28.6" here), excluding temperature-peer places.
- Granite Falls, MN 28.6" · 0.0" off
- Alton, KS 28.6" · 0.0" off
- Pipestone, MN 28.6" · 0.0" off
- Yankton, SD 28.7" · 0.0" off
Data-derived climate profile
How Gibraltar Dam's climate pattern fits together
heating led · moderate · low swing
Heating is the larger measured load in Gibraltar Dam, at 2,361 degree days versus 1,063 for cooling. Unlike a strongly continental record, however, its 26.1°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
The frost-free window extends for about 252 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
Temperature varies within a narrow 26.1°F band across the normal year. August and December mark the typical warm and cold ends of the calendar. The annual average is 61°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
Gibraltar Dam's 28.6 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Gibraltar Dam'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 Gibraltar Dam, not an official NOAA class or a year-ahead forecast.
Questions about Gibraltar Dam's climate
How much rain does Gibraltar Dam get? ▼
How many days above 90°F does Gibraltar Dam get? ▼
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Gibraltar Dam's primary station: GIBRALTAR DAM #2 (USC00043402). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Gibraltar Dam; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Gibraltar Dam 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.