Martinez Wtp, CA Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Martinez Wtp's primary NOAA station, MARTINEZ WTP.
The climate verdict for Martinez Wtp
Dryness leads the climate profile for Martinez Wtp, California, with 19.4 inches of precipitation a year. NOAA records an annual average of 58°F. It scores 77/100 for climate comfort (good), putting it in the top third of station-mapped location scores and exceeding 70% of them.
- 58°F
- average temperature, NOAA 1991-2020 normal
- 77/100
- comfort score, above 70% of station-mapped location scores
- 19.4"
- yearly precipitation total
- 267 days
- frost-free days per growing season
Martinez Wtp: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00045378 · Martinez Wtp, CA 58°F mean · 19.4" 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 #4,803
- PHOTO-FINISH ≈ Santa Rosa Sono…
- PRCP-DRY 19.4"
- SWING-NARROW 24°F
- COMF-TOP 77/100
- LOAD-HEAT 3,026 HDD
- STN-1 USC00045378
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Santa Rosa Sonoma County, 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 Ukiah, CA 59°F
- Martinez Wtp (this station) 58°F
- Cold Occidental, CA 58°F
- Near Santa Rosa Sono…, CA 58°F
- Near Napa County, CA 58°F
Climate Living Index · Martinez Wtp
Martinez Wtp: 80/100 · grade B
Martinez Wtp publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Martinez Wtp, not an official NOAA rating. Rankings still use Comfort Score 77/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Frost-free season | 267 days/year | 94/100 · A |
| Snowfall burden | 0.0 inches/year | 90/100 · A |
| Annual temperature balance | 58.2°F · 9.3° from 67.5°F | 70/100 · B |
| Precipitation balance | 19.4 in · 15.6 from 35 in | 45/100 · D |
Martinez Wtp · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Martinez Wtp is a temperate Köppen climate: Csb
Coldest-month mean 45.6°F and warmest-month mean 69.8°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
- 69.8°F
- Coldest month
- 45.6°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 Martinez Wtp sits across the climate record
Three NOAA fields for Martinez Wtp's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 30% warmest
- Among 6,861 stations, Martinez Wtp sits in the warmer third of annual means.
- Annual precipitation
- Drier than 73%
- Martinez Wtp's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 95%
- Warmest-to-coldest month gap for Martinez Wtp is compact versus 6,861 complete station-years.
How Martinez Wtp compares across U.S. station-mapped locations
Martinez Wtp's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
77 Top 30% score exceeds 70% 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%). This entry sits in this band.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Martinez Wtp's measured station temperature trend
MethodologyAcross 35 complete annual observations from 1971 to 2017, MARTINEZ WTP warmed at a fitted rate of 0.23°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Martinez Wtp primary station fitted change +0.23 °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 | 56°F (13°C) | 35°F (2°C) | 46°F (8°C) | 3.9" | 0.0" | 5.6 | 0.0 |
| February | 61°F (16°C) | 37°F (3°C) | 49°F (10°C) | 3.8" | 0.0" | 1.8 | 0.0 |
| March | 66°F (19°C) | 40°F (5°C) | 53°F (12°C) | 2.7" | 0.0" | 0.5 | 0.0 |
| April | 71°F (22°C) | 43°F (6°C) | 57°F (14°C) | 1.3" | 0.0" | 0.1 | 0.5 |
| May | 78°F (26°C) | 46°F (8°C) | 62°F (17°C) | 0.6" | 0.0" | 0.0 | 3.2 |
| June | 85°F (29°C) | 50°F (10°C) | 67°F (20°C) | 0.3" | 0.0" | 0.0 | 9.2 |
| July | 88°F (31°C) | 51°F (11°C) | 70°F (21°C) | 0.0" | 0.0" | 0.0 | 13.7 |
| August | 87°F (31°C) | 51°F (10°C) | 69°F (21°C) | 0.0" | 0.0" | 0.0 | 10.9 |
| September | 84°F (29°C) | 50°F (10°C) | 67°F (19°C) | 0.1" | 0.0" | 0.0 | 7.8 |
| October | 76°F (24°C) | 46°F (8°C) | 61°F (16°C) | 0.8" | 0.0" | 0.0 | 1.5 |
| November | 64°F (18°C) | 39°F (4°C) | 52°F (11°C) | 2.1" | 0.0" | 1.1 | 0.0 |
| December | 57°F (14°C) | 35°F (2°C) | 46°F (8°C) | 3.8" | 0.0" | 7.4 | 0.0 |
The year, day by day
The calendar barely moves in Martinez Wtp: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 34°F near December 25 and 89°F near July 11.
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 34°F around December 25.
Where the wet dates fall
The likeliest wet date is February 11, when 38% of years recorded at least a hundredth of an inch. The driest is July 27 at 0%. Summed across the calendar, that is about 62 wet dates a year.
The widest day
July 24 carries the biggest normal gap between afternoon and dawn, 37°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Martinez Wtp.
Where Martinez Wtp Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 37°F, sharper than nine in ten ranked stations see.
Martinez Wtp 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
11.3 days with precipitation
10.8 days with precipitation
9.0 days with precipitation
5.6 days with precipitation
3.1 days with precipitation
0.7 days with precipitation
0.1 days with precipitation
0.1 days with precipitation
0.6 days with precipitation
3.0 days with precipitation
7.1 days with precipitation
10.4 days with precipitation
Martinez Wtp'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 24.2°F seasonal spread.
- Wettest month
- January, 3.9"
- Driest month
- July, 0.0"
- Wettest three months
- January, February, December (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.
How Martinez Wtp's precipitation splits across the calendar
About 62 days a year record measurable precipitation here, carrying 19.4" between them, or roughly 0.31 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Martinez Wtp'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
November 22
50% probability date
Last Spring Freeze
February 28
50% probability date
Growing Season
267 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,026
Higher = more heating needed
Cooling Degree Days
544
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CA closest to Martinez Wtp 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).
- Bardwell, KY 58°F · 0.0°F off
- Batesville, AR 58°F · 0.0°F off
- Clarksville, TN 58°F · 0.0°F off
- Henderson, NC 58°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (19.4" here), excluding temperature-peer places.
- Timber Lake, SD 19.4" · 0.0" off
- Driggs, ID 19.4" · 0.0" off
- Gail, TX 19.4" · 0.1" off
- Hereford, TX 19.3" · 0.1" off
Data-derived climate profile
How Martinez Wtp's climate pattern fits together
heating led · dry · low swing
Heating is the larger measured load in Martinez Wtp, at 3,026 degree days versus 544 for cooling. Unlike a strongly continental record, however, its 24.2°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Martinez Wtp has a long frost-free window of roughly 267 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
The calendar stays thermally compact and dry. July and January mark the typical warm and cold ends of the calendar, only 24.2°F apart, while the annual precipitation total remains below PlainClimate's dry threshold. The annual average is 58°F. The monthly rows show whether that limited precipitation is spread through the year or concentrated in a shorter interval.
Martinez Wtp's cold-season load does not imply a wet climate. Annual precipitation is 19.4 inches, which places the station in PlainClimate's dry range. Recorded annual snowfall is negligible. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
These labels group NOAA 1991-2020 normals from Martinez Wtp'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 Martinez Wtp, not an official NOAA class or a year-ahead forecast.
Questions about Martinez Wtp's climate
How much rain does Martinez Wtp get? ▼
How many days above 90°F does Martinez Wtp get? ▼
How much energy does heating and cooling require in Martinez Wtp? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Martinez Wtp's primary station: MARTINEZ WTP (USC00045378). 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 Martinez Wtp; 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 Martinez Wtp 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.