San Diego Miramar Naval Air Station, California climate: Climate normals at a NOAA weather station
San Diego Miramar Naval Air Station's normal year runs from 46°F December nights to 82°F August afternoons, with 11.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.9°C, December lows of 8°C, August highs of 28°C, 292 mm of precipitation a year.
- NOAA stationSan Diego Miramar Naval Air Station
- Station IDUSW00093107
- Location32.87°N 117.13°W
- Elevation477 ft (145 m)
On October 23, the normal high in San Diego Miramar Naval Air Station is 77°F and the normal low 56°F, and the chance of measurable rain or snow is 12%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for San Diego Miramar Naval Air Station.
- Jan 67° 47°
- Feb 67° 48°
- Mar 68° 50°
- Apr 70° 52°
- May 72° 57°
- Jun 75° 60°
- Jul 80° 64°
- Aug 82° 65°
- Sep 82° 63°
- Oct 78° 58°
- Nov 72° 51°
- 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 San Diego Miramar Naval Air Station each month?
August is the warmest month, with normal highs of 82°F; December the coldest, with normal lows of 46°F. The most precipitation falls in February (2.66 in), the least in August (0.02 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 67°F | 47°F | 57.2°F | 2.30 | 7 | <1 | <1 | 10 h 10 min |
| February | 67°F | 48°F | 57.6°F | 2.66 | 9 | <1 | <1 | 11 h |
| March | 68°F | 50°F | 58.7°F | 1.64 | 7 | <1 | <1 | 12 h |
| April | 70°F | 52°F | 61.2°F | 0.78 | 4 | 1 | <1 | 13 h |
| May | 72°F | 57°F | 64.3°F | 0.28 | 3 | 1 | <1 | 13 h 50 min |
| June | 75°F | 60°F | 67.7°F | 0.05 | 1 | 1 | <1 | 14 h 20 min |
| July | 80°F | 64°F | 72.0°F | 0.12 | 1 | 2 | <1 | 14 h 10 min |
| August | 82°F | 65°F | 73.8°F | 0.02 | <1 | 5 | <1 | 13 h 20 min |
| September | 82°F | 63°F | 72.3°F | 0.14 | 1 | 5 | <1 | 12 h 30 min |
| October | 78°F | 58°F | 67.5°F | 0.57 | 3 | 4 | <1 | 11 h 30 min |
| November | 72°F | 51°F | 61.6°F | 0.93 | 5 | 1 | <1 | 10 h 30 min |
| December | 67°F | 46°F | 56.4°F | 1.99 | 8 | <1 | <1 | 10 h |
| Year (annual) | 73°F | 55°F | 64.2°F | 11.48 | 51 | 20 | <1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 20°C | 8°C | 14.0°C | 58 mm |
| February | 20°C | 9°C | 14.2°C | 68 mm |
| March | 20°C | 10°C | 14.8°C | 42 mm |
| April | 21°C | 11°C | 16.2°C | 20 mm |
| May | 22°C | 14°C | 17.9°C | 7 mm |
| June | 24°C | 16°C | 19.8°C | 1 mm |
| July | 27°C | 18°C | 22.2°C | 3 mm |
| August | 28°C | 18°C | 23.2°C | 1 mm |
| September | 28°C | 17°C | 22.4°C | 4 mm |
| October | 25°C | 14°C | 19.7°C | 14 mm |
| November | 22°C | 10°C | 16.4°C | 24 mm |
| December | 19°C | 8°C | 13.6°C | 51 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093107; 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 San Diego Miramar Naval Air Station?
Every month's normal high in San Diego Miramar Naval Air Station falls between 65°F and 85°F.
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 USW00093107.
How hot and how cold does it get at San Diego Miramar Naval Air Station?
In a normal year in San Diego Miramar Naval Air Station, 20 days a year reach 90°F (2 of them 100°F or more), nights almost never fall to freezing and 51 days bring measurable precipitation.
- Days at 90°F or more
- 20a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- fewer than 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 51a normal year
The highest temperature in this station's record (since 1947) is 111°F, on September 26, 1963; the lowest is 27°F, on January 15, 2007.
The wettest calendar year on that record is 1978, with 28.10 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00093107; records: ACIS (NOAA Regional Climate Centers), station USW00093107. Records use complete months only; a month missing more than three days is left out.
How sunny is it at San Diego Miramar Naval Air Station?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at San Diego Miramar Naval Air Station, 4.9 kWh per square metre a day. November is the sunniest month (83%) and June the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 83% | 3.3 |
| February | 82% | 4.1 |
| March | 81% | 5.2 |
| April | 81% | 6.1 |
| May | 74% | 6.1 |
| June | 69% | 5.9 |
| July | 75% | 6.1 |
| August | 80% | 6.1 |
| September | 82% | 5.3 |
| October | 81% | 4.3 |
| November | 83% | 3.4 |
| December | 82% | 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 San Diego Miramar Naval Air Station record?
A normal year at San Diego Miramar Naval Air Station brings 1,311 heating degree days, 76% fewer than the median U.S. place (5,373), and 1,033 cooling degree days, 14% more than the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 5,208 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 246 | 4 |
| February | 213 | 7 |
| March | 203 | 8 |
| April | 135 | 22 |
| May | 65 | 42 |
| June | 14 | 93 |
| July | 0 | 219 |
| August | 0 | 273 |
| September | 3 | 224 |
| October | 30 | 109 |
| November | 131 | 29 |
| December | 271 | 3 |
| Year (annual) | 1,311 | 1,033 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093107. 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.
Have recent years at San Diego Miramar Naval Air Station been warmer than normal?
2025 averaged 63.0°F, 1.2°F below the 1991-2020 normal of 64.2°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2025 | 63.0°F | −1.2°F | – |
Over 52 complete years from 1948 to 2025, the station's annual mean temperature rose at a fitted 6.6°F per century (+0.37°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00093107; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does San Diego Miramar Naval Air Station's climate compare?
San Diego Miramar Naval Air Station is warmer than 167 of the 219 places with their own NOAA record in California, and wetter than 51. Across the 7,247 U.S. stations with normals, its annual mean of 64.2°F is warmer than 86%.
In the Köppen classification computed from these normals, San Diego Miramar Naval Air Station is BSk: cold 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 San Diego Miramar Naval Air Station share this climate record?
Del Mar 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.
- Del Mar, CA3,902 people · 10 mi NW
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 San Diego Miramar Naval Air Station's climate
What is the coldest month at San Diego Miramar Naval Air Station?
December, with a normal high of 67°F and a normal low of 46°F. The warmest is August (82°F by day, 65°F at night).
What is the rainiest month at San Diego Miramar Naval Air Station?
February, with 2.66 in of precipitation in a normal year; the driest is August with 0.02 in.
What plant hardiness zone is San Diego Miramar Naval Air Station in?
The USDA's 2023 map puts San Diego Miramar Naval Air Station in zone 10b in ZIP code 92145, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 34°F (18 years, 1991-2020): zone 10a.
Nearby and next
- California climateThe statewide normals and every place in the state
- San Diego Montgomery Field, CA4 miles from this station, 64.1°F a year
- San Diego Seaworld, CA9 miles from this station, 61.7°F a year
- San Diego, CA10 miles from this station, 64.7°F a year
- Rancho Bernardo, CA11 miles from this station, 63.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made