Santa Clarita, California climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Santa Clarita's center at January lows of 42°F and July highs of 93°F, a yearly mean of 64.1°F and 17.3 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Stevenson Ranch (6 miles W, 1,765 ft), has January lows of 47°F and July highs of 94°F.
229,159 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 65° 42°
- Feb 66° 42°
- Mar 70° 44°
- Apr 74° 47°
- May 79° 51°
- Jun 86° 57°
- Jul 93° 61°
- Aug 94° 62°
- Sep 90° 59°
- Oct 81° 53°
- Nov 72° 46°
- Dec 64° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Santa Clarita's center.
What is each month like in Santa Clarita?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Stevenson Ranch high | Stevenson Ranch low |
|---|---|---|---|---|---|---|
| January | 65°F | 42°F | 53.5°F | 3.87 | 63°F | 47°F |
| February | 66°F | 42°F | 54.0°F | 4.62 | 65°F | 45°F |
| March | 70°F | 44°F | 57.0°F | 2.98 | 70°F | 47°F |
| April | 74°F | 47°F | 60.6°F | 0.88 | 74°F | 49°F |
| May | 79°F | 51°F | 65.2°F | 0.31 | 81°F | 54°F |
| June | 86°F | 57°F | 71.4°F | 0.06 | 87°F | 57°F |
| July | 93°F | 61°F | 77.1°F | 0.02 | 94°F | 63°F |
| August | 94°F | 62°F | 78.0°F | 0.01 | 96°F | 64°F |
| September | 90°F | 59°F | 74.6°F | 0.10 | 91°F | 62°F |
| October | 81°F | 53°F | 66.9°F | 0.68 | 81°F | 56°F |
| November | 72°F | 46°F | 58.6°F | 0.94 | 71°F | 49°F |
| December | 64°F | 41°F | 52.5°F | 2.86 | 62°F | 44°F |
In metric: a yearly mean of 17.8°C, January lows of 6°C, July highs of 34°C and 440 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Santa Clarita say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Stevenson RanchNewhall (5 mi NW) | 6 mi W | 1,765 ft | 65.5°F | 47°F | 94°F | 16.8 | 0 | January 8 |
| Northridge Cal State | 12 mi S | 904 ft | 66.2°F | 47°F | 90°F | 14.6 | 0 | January 2 |
| Van Nuys Airport | 14 mi S | 770 ft | 66.6°F | 46°F | 91°F | 13.4 | – | December 31 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Santa Clarita?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Stevenson Ranch (6 miles W, 1,765 ft). It gets 0 inches of snow in a normal year. The last spring frost (32°F) comes after January 8 in half of years and the first autumn frost before January 1.
The USDA's 2023 Plant Hardiness Zone Map puts Santa Clarita in zones 9b to 10a across its 6 ZIP code areas.
Over a year 90% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.7 kWh per square metre a day, NASA POWER 2001-2020); August is the sunniest month (97%) and February the cloudiest (82%).
Stevenson Ranch's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Santa Clarita; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00046161; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Santa Clarita, ZIP code by ZIP code?
6 ZIP code areas lie wholly or partly in Santa Clarita. On NOAA's grid 91355 is the warmest (64.3°F a year) and 91387 the coolest (61.5°F), a spread of 2.8°F. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 91321 | 10a | 64.1°F | 44°F | 91°F | 17.9 | Stevenson Ranch (6 mi) | January 8 | January 1 |
| 91350 | 10a | 63.9°F | 41°F | 93°F | 17.8 | Stevenson Ranch (6 mi) | January 8 | January 1 |
| 91351 | 10a | 63.1°F | 40°F | 93°F | 16.9 | Stevenson Ranch (8 mi) | January 8 | January 1 |
| 91354 | 10a | 64.1°F | 41°F | 94°F | 17.8 | Stevenson Ranch (5 mi) | January 8 | January 1 |
| 91355 | 10a | 64.3°F | 42°F | 93°F | 17.1 | Stevenson Ranch (1 mi) | January 8 | January 1 |
| 91387 | 9b | 61.5°F | 41°F | 90°F | 19.8 | Stevenson Ranch (13 mi) | January 8 | January 1 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.