Northridge Cal State, California climate: Climate normals at a NOAA weather station
Northridge Cal State's normal year runs from 46°F December nights to 92°F August afternoons, with 14.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 19.0°C, December lows of 8°C, August highs of 33°C, 372 mm of precipitation a year.
- NOAA stationNorthridge Cal State
- Station IDUSC00046263
- Location34.24°N 118.53°W
- Elevation904 ft (276 m)
On October 23, the normal high in Northridge Cal State is 81°F and the normal low 54°F, and the chance of measurable rain or snow is 9%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Northridge Cal State.
- Jan 67° 47°
- Feb 68° 47°
- Mar 71° 49°
- Apr 75° 52°
- May 78° 56°
- Jun 84° 60°
- Jul 90° 64°
- Aug 92° 64°
- Sep 89° 62°
- Oct 82° 56°
- Nov 74° 50°
- Dec 67° 46°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Northridge Cal State each month?
August is the warmest month, with normal highs of 92°F; December the coldest, with normal lows of 46°F. The most precipitation falls in February (3.89 in), the least in August (0.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 67°F | 47°F | 57.0°F | 3.42 | 6 | <1 | <1 | 10 h 10 min |
| February | 68°F | 47°F | 57.3°F | 3.89 | 7 | <1 | <1 | 11 h |
| March | 71°F | 49°F | 60.1°F | 2.35 | 5 | 1 | <1 | 11 h 50 min |
| April | 75°F | 52°F | 63.2°F | 0.72 | 3 | 2 | <1 | 13 h |
| May | 78°F | 56°F | 66.7°F | 0.37 | 2 | 5 | <1 | 14 h |
| June | 84°F | 60°F | 71.7°F | 0.10 | 1 | 7 | <1 | 14 h 30 min |
| July | 90°F | 64°F | 76.9°F | 0.02 | <1 | 18 | <1 | 14 h 10 min |
| August | 92°F | 64°F | 78.1°F | 0.01 | <1 | 20 | <1 | 13 h 30 min |
| September | 89°F | 62°F | 75.6°F | 0.09 | 1 | 15 | <1 | 12 h 30 min |
| October | 82°F | 56°F | 68.8°F | 0.56 | 3 | 7 | <1 | 11 h 20 min |
| November | 74°F | 50°F | 62.2°F | 0.79 | 4 | 1 | <1 | 10 h 20 min |
| December | 67°F | 46°F | 56.3°F | 2.32 | 6 | <1 | <1 | 9 h 50 min |
| Year (annual) | 78°F | 54°F | 66.2°F | 14.64 | 36 | 76 | 1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 20°C | 8°C | 13.9°C | 87 mm |
| February | 20°C | 8°C | 14.1°C | 99 mm |
| March | 22°C | 10°C | 15.6°C | 60 mm |
| April | 24°C | 11°C | 17.3°C | 18 mm |
| May | 25°C | 13°C | 19.3°C | 9 mm |
| June | 29°C | 15°C | 22.1°C | 3 mm |
| July | 32°C | 18°C | 24.9°C | 1 mm |
| August | 33°C | 18°C | 25.6°C | 0 mm |
| September | 32°C | 17°C | 24.2°C | 2 mm |
| October | 28°C | 13°C | 20.4°C | 14 mm |
| November | 24°C | 10°C | 16.8°C | 20 mm |
| December | 19°C | 8°C | 13.5°C | 59 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046263; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Northridge Cal State?
Normal highs sit between 65°F and 85°F in January, February, March, April, May, June, October, November and December. Of those, June has the fewest days with rain (1).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046263.
When is the last frost at Northridge Cal State?
A night at 32°F or colder comes in only 18% of years in Northridge Cal State (NOAA). NOAA's median date of the last spring frost is January 2 and of the first autumn frost January 1.
NOAA puts the median frost-free season at 365 days, and the season without a hard freeze (28°F) at 365 days.
The USDA's 2023 Plant Hardiness Zone Map puts Northridge Cal State in zone 10a in ZIP code 91330, the nearest ZIP area.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00046263; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Northridge Cal State?
In a normal year in Northridge Cal State, 76 days a year reach 90°F (14 of them 100°F or more), 1 night falls to 32°F or colder and 36 days bring measurable precipitation.
- Days at 90°F or more
- 76a normal year
- Days at 100°F or more
- 14a normal year
- Nights at 32°F or colder
- 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 36a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00046263.
How sunny is it at Northridge Cal State?
Over a year 90% of the sunlight that would reach the ground under clear skies gets through the clouds at Northridge Cal State, 5.7 kWh per square metre a day. August is the sunniest month (97%) and February the cloudiest (82%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 83% | 3.2 |
| February | 82% | 4.0 |
| March | 85% | 5.4 |
| April | 87% | 6.7 |
| May | 89% | 7.5 |
| June | 93% | 8.1 |
| July | 95% | 7.9 |
| August | 97% | 7.5 |
| September | 95% | 6.3 |
| October | 91% | 4.8 |
| November | 88% | 3.6 |
| December | 83% | 2.9 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Northridge Cal State record?
A normal year at Northridge Cal State brings 1,273 heating degree days, 76% fewer than the median U.S. place (5,373), and 1,711 cooling degree days, 89% more than the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 5,956 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 262 | 13 |
| February | 229 | 14 |
| March | 177 | 25 |
| April | 111 | 56 |
| May | 50 | 103 |
| June | 6 | 207 |
| July | 0 | 369 |
| August | 0 | 405 |
| September | 3 | 321 |
| October | 31 | 148 |
| November | 126 | 44 |
| December | 279 | 8 |
| Year (annual) | 1,273 | 1,711 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046263. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Northridge Cal State's climate compare?
Northridge Cal State is warmer than 200 of the 219 places with their own NOAA record in California, and wetter than 101. Across the 7,247 U.S. stations with normals, its annual mean of 66.2°F is warmer than 90%.
In the Köppen classification computed from these normals, Northridge Cal State is BSh: hot semi-arid steppe. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Northridge Cal State share this climate record?
San Fernando has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- San Fernando, CA23,488 people · 6 mi NE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Northridge Cal State's climate
What is the coldest month at Northridge Cal State?
December, with a normal high of 67°F and a normal low of 46°F. The warmest is August (92°F by day, 64°F at night).
Does it snow at Northridge Cal State?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Northridge Cal State?
February, with 3.89 in of precipitation in a normal year; the driest is August with 0.01 in.
What plant hardiness zone is Northridge Cal State in?
The USDA's 2023 map puts Northridge Cal State in zone 10a in ZIP code 91330, the nearest ZIP area.
Nearby and next
- California climateThe statewide normals and every place in the state
- Van Nuys Airport, CA3 miles from this station, 66.6°F a year
- Woodland Hills Pierce College, CA5 miles from this station, 66.3°F a year
- Burbank, CA10 miles from this station, 65.2°F a year
- Stevenson Ranch, CA11 miles from this station, 65.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made