Watsonville Wtr Wks, CA Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Watsonville Wtr Wks's primary NOAA station, WATSONVILLE WTR WKS.
The climate verdict for Watsonville Wtr Wks
A compact 12.9°F seasonal swing gives Watsonville Wtr Wks, California a steadier-than-extreme annual shape. NOAA reports an annual average of 58°F. It scores 90/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 91% of them.
- 58°F
- annual average temperature (NOAA normal)
- 90/100
- comfort score, above 91% of station-mapped location scores
- 22.7"
- annual precipitation
- 319 days
- frost-free growing season
Watsonville Wtr Wks: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00049473 · Watsonville Wtr Wks, CA 58°F mean · 22.7" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-DRY · SWING-NARROW · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 58°F
- RANK-UPPER #4,665
- PHOTO-FINISH ≈ San Francisco D…
- PRCP-DRY 22.7"
- SWING-NARROW 13°F
- COMF-TOP 90/100
- LOAD-HEAT 2,830 HDD
- STN-1 USC00049473
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: San Francisco Dwtn, 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.
- Watsonville Wtr… (this station) 58°F
- Hot Salinas, CA 58°F
- Near San Francisco D…, CA 58°F
- Cold Monterey Penins…, CA 57°F
- Near Pacifica, CA 57°F
Climate Living Index · Watsonville Wtr Wks
Watsonville Wtr Wks: 82/100 · grade B
Watsonville Wtr Wks publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Watsonville Wtr Wks, not an official NOAA rating. Rankings still use Comfort Score 90/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 319 days/year | 100/100 · A |
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Snowfall burden | 0.0 inches/year | 90/100 · A |
| Annual temperature balance | 57.6°F · 9.9° from 67.5°F | 68/100 · C |
| Precipitation balance | 22.7 in · 12.3 from 35 in | 57/100 · C |
Watsonville Wtr Wks · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Watsonville Wtr Wks is a temperate Köppen climate: Csb
Coldest-month mean 50.6°F and warmest-month mean 63.5°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
- 63.5°F
- Coldest month
- 50.6°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 Watsonville Wtr Wks sits across the climate record
Three NOAA fields for Watsonville Wtr Wks's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 68th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 32nd percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 99%
- Warmest-to-coldest month gap for Watsonville Wtr Wks is compact versus 6,861 complete station-years.
How Watsonville Wtr Wks compares across U.S. station-mapped locations
Watsonville Wtr Wks's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
90 Top 9% score exceeds 91% 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
Watsonville Wtr Wks's measured station temperature trend
MethodologyAcross 74 complete annual observations from 1910 to 2025, WATSONVILLE WTR WKS warmed at a fitted rate of 0.16°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Watsonville Wtr Wks primary station fitted change +0.16 °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 | 62°F (17°C) | 40°F (4°C) | 51°F (11°C) | 4.4" | 0.0" | 2.7 | 0.0 |
| February | 63°F (17°C) | 42°F (5°C) | 52°F (11°C) | 4.5" | 0.0" | 1.1 | 0.0 |
| March | 65°F (18°C) | 43°F (6°C) | 54°F (12°C) | 3.6" | 0.0" | 0.2 | 0.0 |
| April | 68°F (20°C) | 45°F (7°C) | 56°F (14°C) | 1.6" | 0.0" | 0.1 | 0.3 |
| May | 69°F (21°C) | 49°F (9°C) | 59°F (15°C) | 0.6" | 0.0" | 0.0 | 0.7 |
| June | 71°F (22°C) | 52°F (11°C) | 61°F (16°C) | 0.1" | 0.0" | 0.0 | 0.6 |
| July | 71°F (22°C) | 54°F (12°C) | 63°F (17°C) | 0.0" | 0.0" | 0.0 | 0.3 |
| August | 72°F (22°C) | 55°F (13°C) | 63°F (17°C) | 0.0" | 0.0" | 0.0 | 0.5 |
| September | 74°F (23°C) | 53°F (12°C) | 64°F (18°C) | 0.1" | 0.0" | 0.0 | 2.0 |
| October | 74°F (23°C) | 49°F (9°C) | 61°F (16°C) | 1.0" | 0.0" | 0.0 | 2.0 |
| November | 68°F (20°C) | 43°F (6°C) | 56°F (13°C) | 2.3" | 0.0" | 0.6 | 0.2 |
| December | 62°F (17°C) | 39°F (4°C) | 51°F (10°C) | 4.5" | 0.0" | 3.4 | 0.0 |
The year, day by day
The calendar barely moves in Watsonville Wtr Wks: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 39°F near December 19 and 75°F near September 24.
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 39°F around December 19.
Where the wet dates fall
The likeliest wet date is February 19, when 38% of years recorded at least a hundredth of an inch. The driest is July 14 at 2%. Summed across the calendar, that is about 65 wet dates a year.
The widest day
October 28 carries the biggest normal gap between afternoon and dawn, 26°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Watsonville Wtr Wks.
Monthly Precipitation
Average monthly rainfall and snowfall
10.5 days with precipitation
10.7 days with precipitation
9.9 days with precipitation
6.2 days with precipitation
3.4 days with precipitation
1.2 days with precipitation
0.6 days with precipitation
0.8 days with precipitation
0.7 days with precipitation
3.3 days with precipitation
6.5 days with precipitation
10.3 days with precipitation
Watsonville Wtr Wks's wet season runs through the cold months
December, January and February carry 59% 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 12.9°F seasonal spread.
- Wettest month
- December, 4.5"
- Driest month
- July, 0.0"
- Wettest three months
- December, February, January (59% 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 Watsonville Wtr Wks, it arrives in quantity
22.7" of precipitation falls across only about 64 wet days here, averaging 0.35 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 64 a year, 18% of all days
- Average depth per wet day
- 0.35 inches
- Most wet days
- February, about 11
- Fewest wet days
- July, about 1
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.
Watsonville Wtr Wks's record shows no measurable snowfall
This station measured snowfall across the 1991-2020 period and recorded none: the annual normal is 0.0 inches. That is a measured zero rather than missing data, which is a meaningful distinction here , most stations in the database simply do not report snow at all, and those pages say nothing about it.
A thirty-year normal of zero describes the typical year at this station. It is not a claim that snow has never fallen in the area.
Frost Dates & Growing Season
First Fall Freeze
December 13
50% probability date
Last Spring Freeze
January 28
50% probability date
Growing Season
319 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,830
Higher = more heating needed
Cooling Degree Days
138
Higher = more cooling needed
Warmest Month
September
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Watsonville Wtr Wks 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 (58°F here).
- Big Water, UT 58°F · 0.0°F off
- Gate, OK 58°F · 0.0°F off
- Gladeville, TN 58°F · 0.0°F off
- Independence, KS 58°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (22.7" here), excluding temperature-peer places.
- Gann Valley, SD 22.7" · 0.0" off
- Clarendon, TX 22.7" · 0.0" off
- Red Lodge, MT 22.7" · 0.0" off
- Sonora, TX 22.7" · 0.0" off
Data-derived climate profile
How Watsonville Wtr Wks's climate pattern fits together
heating led · moderate · low swing
Heating is the larger measured load in Watsonville Wtr Wks, at 2,830 degree days versus 138 for cooling. Unlike a strongly continental record, however, its 12.9°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 319 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 12.9°F band across the normal year. September and December mark the typical warm and cold ends of the calendar. The annual average is 58°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
Watsonville Wtr Wks's 22.7 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Recorded annual snowfall is negligible. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Watsonville Wtr Wks'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 Watsonville Wtr Wks, not an official NOAA class or a year-ahead forecast.
Questions about Watsonville Wtr Wks's climate
How much rain does Watsonville Wtr Wks get? ▼
How much energy does heating and cooling require in Watsonville Wtr Wks? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Watsonville Wtr Wks's primary station: WATSONVILLE WTR WKS (USC00049473). 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 Watsonville Wtr Wks; 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 Watsonville Wtr Wks 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.