North Island, 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 North Island's primary NOAA station, NORTH ISLAND NAS.
The climate verdict for North Island
Dryness leads the climate profile for North Island, California, with 9.3 inches of precipitation a year. NOAA records an annual average of 64°F. It scores 76/100 for climate comfort (good), putting it in the top third of station-mapped location scores and exceeding 69% of them.
- 64°F
- annual average temperature (NOAA normal)
- 76/100
- comfort score, above 69% of station-mapped location scores
- 9.3"
- precipitation, annual total
North Island: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00093112 · North Island, CA 64°F mean · 9.3" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-ARID · SWING-NARROW · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 64°F
- RANK-UPPER #5,832
- PHOTO-FINISH ≈ Balmorhea
- PRCP-ARID 9.3"
- SWING-NARROW 14°F
- COMF-TOP 76/100
- LOAD-MIX H/C balanced
- STN-1 USW00093112
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Balmorhea, TX (+ 0 °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.
- North Island (this station) 64°F
- Hot Eden, TX 64°F
- Near Balmorhea, TX 64°F
- Near Birmingham, AL 64°F
- Near Blackville, SC 64°F
Climate Living Index · North Island
North Island: 73/100 · grade B
North Island publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 1 missing weight rescale to 100.
PlainClimate-derived for North Island, not an official NOAA rating. Rankings still use Comfort Score 76/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Snowfall burden | 0.0 inches/year | 90/100 · A |
| Annual temperature balance | 63.9°F · 3.6° from 67.5°F | 89/100 · A |
| Summer moisture balance | 61.2°F mean dew point | 54/100 · D |
| Precipitation balance | 9.3 in · 25.7 from 35 in | 10/100 · F |
North Island · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
North Island's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 71.6°F
- Coldest month
- 57.2°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 · balanced station
Where North Island sits across the climate record
Three NOAA fields for North Island's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 15% warmest
- Among 6,861 stations, North Island sits in the warmer third of annual means.
- Annual precipitation
- Drier than 95%
- North Island's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 98%
- Warmest-to-coldest month gap for North Island is compact versus 6,861 complete station-years.
How North Island compares across U.S. station-mapped locations
North Island's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
76 Top 31% score exceeds 69% 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
North Island's measured station temperature trend
MethodologyAcross 63 complete annual observations from 1946 to 2025, NORTH ISLAND NAS warmed at a fitted rate of 0.35°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- North Island primary station fitted change +0.35 °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 | 66°F (19°C) | 49°F (9°C) | 58°F (14°C) | 1.7" | 0.0" | 0.0 | 0.0 |
| February | 66°F (19°C) | 51°F (10°C) | 58°F (15°C) | 1.9" | 0.0" | 0.0 | 0.1 |
| March | 67°F (19°C) | 53°F (12°C) | 60°F (16°C) | 1.4" | 0.0" | 0.0 | 0.1 |
| April | 68°F (20°C) | 55°F (13°C) | 62°F (17°C) | 0.6" | 0.0" | 0.0 | 0.1 |
| May | 69°F (21°C) | 59°F (15°C) | 64°F (18°C) | 0.5" | 0.0" | 0.0 | 0.1 |
| June | 71°F (22°C) | 62°F (17°C) | 66°F (19°C) | 0.1" | 0.0" | 0.0 | 0.0 |
| July | 74°F (24°C) | 65°F (18°C) | 70°F (21°C) | 0.1" | 0.0" | 0.0 | 0.0 |
| August | 77°F (25°C) | 67°F (19°C) | 72°F (22°C) | 0.0" | 0.0" | 0.0 | 0.3 |
| September | 77°F (25°C) | 65°F (18°C) | 71°F (22°C) | 0.2" | 0.0" | 0.0 | 0.9 |
| October | 75°F (24°C) | 60°F (16°C) | 67°F (20°C) | 0.6" | 0.0" | 0.0 | 1.3 |
| November | 71°F (21°C) | 54°F (12°C) | 62°F (17°C) | 0.8" | 0.0" | 0.0 | 0.6 |
| December | 66°F (19°C) | 49°F (9°C) | 57°F (14°C) | 1.5" | 0.0" | 0.0 | 0.0 |
The year, day by day
The calendar barely moves in North Island: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 48°F near December 19 and 77°F near August 26.
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 48°F around December 19.
Where the wet dates fall
The likeliest wet date is February 17, when 25% of years recorded at least a hundredth of an inch. The driest is August 15 at 2%. Summed across the calendar, that is about 42 wet dates a year.
The widest day
January 4 carries the biggest normal gap between afternoon and dawn, 18°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for North Island.
Where North Island Stands Nationally
Aridity defines the water calendar: about 9 inches in a normal year lands this among the driest tenth of ranked stations.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 18°F.
North Island earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
7.3 days with precipitation
7.5 days with precipitation
5.7 days with precipitation
3.1 days with precipitation
1.7 days with precipitation
0.7 days with precipitation
0.6 days with precipitation
0.4 days with precipitation
0.9 days with precipitation
2.8 days with precipitation
4.1 days with precipitation
6.7 days with precipitation
North Island's wet season runs through the cold months
December, January and February carry 55% of the year's precipitation here, while June through August contribute 2%. 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 14.4°F seasonal spread.
- Wettest month
- February, 1.9"
- Driest month
- August, 0.0"
- Wettest three months
- February, January, December (55% 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 North Island's precipitation splits across the calendar
About 42 days a year record measurable precipitation here, carrying 9.3" between them, or roughly 0.22 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.
North Island'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
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,144
Higher = more heating needed
Cooling Degree Days
760
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 65% | 5.5 | 18% | 10% |
| February | 66% | 6.7 | 12% | 13% |
| March | 67% | 6.9 | 13% | 15% |
| April | 68% | 7.1 | 13% | 13% |
| May | 72% | 7.0 | 10% | 14% |
| June | 74% | 6.8 | 10% | 7% |
| July | 75% | 6.8 | 3% | 7% |
| August | 74% | 6.9 | 7% | 4% |
| September | 72% | 6.0 | 16% | 12% |
| October | 66% | 5.2 | 23% | 9% |
| November | 64% | 5.0 | 21% | 7% |
| December | 63% | 5.1 | 16% | 10% |
Nationwide similar cities
Other rankable U.S. places outside CA closest to North Island 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 (64°F here).
- Balmorhea, TX 64°F · 0.0°F off
- Birmingham, AL 64°F · 0.0°F off
- Blackville, SC 64°F · 0.0°F off
- Eden, TX 64°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (9.3" here), excluding temperature-peer places.
- Minden, NV 9.3" · 0.0" off
- St George, UT 9.3" · 0.0" off
- Terlingua, TX 9.3" · 0.0" off
- Arlington, OR 9.3" · 0.0" off
Scarce-water calendar
Where North Island's limited precipitation lands
mixed demand · dry · low swing
Local precipitation is sparse in this otherwise mixed profile. The station reports 9.3 inches annually, within PlainClimate's dry band. Recorded annual snowfall is negligible. The monthly distribution matters because the total alone does not reveal the timing.
The calendar stays thermally compact and dry. August and December mark the typical warm and cold ends of the calendar, only 14.4°F apart, while the annual precipitation total remains below PlainClimate's dry threshold. The annual average is 64°F. The monthly rows show whether that limited precipitation is spread through the year or concentrated in a shorter interval.
North Island combines a compact 14.4°F annual temperature range with meaningful demand on both sides of the thermostat: 1,144 heating and 760 cooling degree days. The balance matters more here than either annual total in isolation.
A frost-free growing-season length is not available for North Island. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
North Island wettest normal
February
February concentrates the scarce annual total (9.3 inches).
North Island driest normal
August
August is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about North Island's climate
How dry is North Island? ▼
How much energy does heating and cooling require in North Island? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from North Island's primary station: NORTH ISLAND NAS (USW00093112). 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 North Island; 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 North Island 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.