San Clemente, California climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put San Clemente's center at January lows of 48°F and July highs of 75°F, a yearly mean of 62.7°F and 13.3 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Laguna Beach (12 miles NW, 44 ft), has January lows of 44°F and July highs of 80°F.
62,627 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 66° 48°
- Feb 65° 48°
- Mar 66° 50°
- Apr 68° 53°
- May 69° 56°
- Jun 72° 60°
- Jul 75° 64°
- Aug 77° 64°
- Sep 77° 63°
- Oct 74° 58°
- Nov 70° 52°
- Dec 65° 47°
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 San Clemente's center.
What is each month like in San Clemente?
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. | Laguna Beach high | Laguna Beach low |
|---|---|---|---|---|---|---|
| January | 66°F | 48°F | 56.9°F | 3.03 | 68°F | 44°F |
| February | 65°F | 48°F | 56.4°F | 3.34 | 68°F | 45°F |
| March | 66°F | 50°F | 57.8°F | 1.98 | 69°F | 48°F |
| April | 68°F | 53°F | 60.1°F | 0.83 | 73°F | 50°F |
| May | 69°F | 56°F | 62.8°F | 0.31 | 75°F | 55°F |
| June | 72°F | 60°F | 65.6°F | 0.07 | 76°F | 58°F |
| July | 75°F | 64°F | 69.5°F | 0.03 | 80°F | 60°F |
| August | 77°F | 64°F | 70.8°F | 0.01 | 81°F | 61°F |
| September | 77°F | 63°F | 69.7°F | 0.10 | 81°F | 59°F |
| October | 74°F | 58°F | 66.1°F | 0.47 | 77°F | 55°F |
| November | 70°F | 52°F | 60.9°F | 0.91 | 72°F | 49°F |
| December | 65°F | 47°F | 56.2°F | 2.16 | 67°F | 44°F |
In metric: a yearly mean of 17.1°C, January lows of 9°C, July highs of 24°C and 337 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 San Clemente 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 |
|---|---|---|---|---|---|---|---|---|
| Laguna Beach | 12 mi NW | 44 ft | 63.1°F | 44°F | 80°F | 12.7 | 0 | January 6 |
| Camp Pendleton Marine Corps Air Station | 18 mi SE | 75 ft | 62.3°F | 40°F | 80°F | – | – | February 16 |
| Newport BeachNewport Beach Harbor | 19 mi NW | 10 ft | 62.8°F | 50°F | 72°F | 9.4 | 0 | – |
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 San Clemente?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Laguna Beach (12 miles NW, 44 ft). It gets 0 inches of snow in a normal year. The last spring frost (32°F) comes after January 6 in half of years and the first autumn frost before January 2. Its record high is 104°F (1939) and its record low 21°F (1949) (kept since 1928).
The USDA's 2023 Plant Hardiness Zone Map puts San Clemente in zone 10b across its 2 ZIP code areas.
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.4 kWh per square metre a day, NASA POWER 2001-2020); August is the sunniest month (92%) and February the cloudiest (83%).
Laguna Beach'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 San Clemente; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00044647; records: ACIS; 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 San Clemente, ZIP code by ZIP code?
2 ZIP code areas lie wholly or partly in San Clemente. On NOAA's grid 92673 is the warmest (63.2°F a year) and 92672 the coolest (63.1°F), so the city is nearly uniform. 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 |
|---|---|---|---|---|---|---|---|---|
| 92672 | 10b | 63.1°F | 49°F | 78°F | 14.4 | Camp Pendleton Marine Corps Air Station (11 mi) | February 16 | December 8 |
| 92673 | 10b | 63.2°F | 48°F | 79°F | 13.4 | Laguna Beach (11 mi) | January 6 | January 2 |
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.