Campo, California climate: Normal weather by month, frost dates and records
Campo's normal year runs from 34°F December nights to 93°F August afternoons, with 12.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.7°C, December lows of 1°C, August highs of 34°C, 319 mm of precipitation a year.
- NOAA stationCampo Asos
- Station IDUSW00003164
- Location32.63°N 116.47°W
- Elevation2,641 ft (805 m)
- From the center1 miles
- Population (census place)2,739
On October 22, the normal high in Campo is 76°F and the normal low 42°F, and the chance of measurable rain or snow is 8%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Campo.
- Jan 62° 35°
- Feb 61° 35°
- Mar 65° 35°
- Apr 69° 38°
- May 76° 42°
- Jun 85° 46°
- Jul 91° 54°
- Aug 93° 55°
- Sep 88° 51°
- Oct 78° 43°
- Nov 69° 38°
- Dec 61° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Campo each month?
August is the warmest month, with normal highs of 93°F; December the coldest, with normal lows of 34°F. The most precipitation falls in February (2.83 in), the least in June (0.06 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 62°F | 35°F | 48.2°F | 2.37 | 6 | <1 | 14 | 10 h 10 min |
| February | 61°F | 35°F | 48.2°F | 2.83 | 8 | <1 | 12 | 11 h |
| March | 65°F | 35°F | 50.2°F | 1.57 | 7 | <1 | 10 | 12 h |
| April | 69°F | 38°F | 53.4°F | 0.73 | 5 | 1 | 7 | 13 h |
| May | 76°F | 42°F | 58.9°F | 0.30 | 2 | 3 | 1 | 13 h 50 min |
| June | 85°F | 46°F | 65.4°F | 0.06 | 1 | 11 | <1 | 14 h 20 min |
| July | 91°F | 54°F | 72.4°F | 0.21 | 2 | 21 | <1 | 14 h 10 min |
| August | 93°F | 55°F | 73.9°F | 0.14 | 1 | 22 | <1 | 13 h 20 min |
| September | 88°F | 51°F | 69.1°F | 0.65 | 2 | 15 | <1 | 12 h 30 min |
| October | 78°F | 43°F | 60.5°F | 0.52 | 2 | 3 | 1 | 11 h 30 min |
| November | 69°F | 38°F | 53.1°F | 0.88 | 4 | <1 | 8 | 10 h 30 min |
| December | 61°F | 34°F | 47.3°F | 2.31 | 7 | <1 | 15 | 10 h |
| Year (annual) | 75°F | 42°F | 58.4°F | 12.57 | 47 | 76 | 68 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | 2°C | 9.0°C | 60 mm |
| February | 16°C | 2°C | 9.0°C | 72 mm |
| March | 18°C | 2°C | 10.1°C | 40 mm |
| April | 21°C | 3°C | 11.9°C | 19 mm |
| May | 24°C | 6°C | 14.9°C | 8 mm |
| June | 30°C | 8°C | 18.6°C | 2 mm |
| July | 33°C | 12°C | 22.4°C | 5 mm |
| August | 34°C | 13°C | 23.3°C | 4 mm |
| September | 31°C | 10°C | 20.6°C | 17 mm |
| October | 26°C | 6°C | 15.8°C | 13 mm |
| November | 20°C | 3°C | 11.7°C | 22 mm |
| December | 16°C | 1°C | 8.5°C | 59 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Campo's own co-op station Campo station does: 0 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003164; 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.
When is the best weather to visit Campo?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, May has the fewest days with rain (2).
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 USW00003164.
When is the last frost in Campo?
In Campo, the last spring frost (32°F) comes after April 29 in half of years and after June 1 in one year in ten; the first autumn frost comes before November 1 in half of years and before October 5 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 291 year in 10 after June 1; 9 in 10 after April 7
- First autumn frost, half of years before
- November 11 year in 10 before October 5; 9 in 10 before November 23
NOAA puts the median frost-free season at 184 days, and the season without a hard freeze (28°F) at 240 days.
A hard freeze (28°F) comes after March 31 in half of springs and before November 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Campo in zone 9a in ZIP code 91906. By the map's own method, the average of each year's coldest night over 1991-2020, Campo's NOAA station is in zone 8b: the coldest night of a typical year reaches 19°F (17 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00003164; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 in Campo?
In a normal year in Campo, 76 days a year reach 90°F (9 of them 100°F or more), 68 nights fall to 32°F or colder and 47 days bring measurable precipitation.
- Days at 90°F or more
- 76a normal year
- Days at 100°F or more
- 9a normal year
- Nights at 32°F or colder
- 68a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 47a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USW00003164.
How sunny is Campo?
Over a year 90% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Campo, 5.8 kWh per square metre a day. June is the sunniest month (94%) and February the cloudiest (83%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 85% | 3.5 |
| February | 83% | 4.3 |
| March | 87% | 5.7 |
| April | 89% | 7.0 |
| May | 90% | 7.7 |
| June | 94% | 8.3 |
| July | 92% | 7.7 |
| August | 94% | 7.3 |
| September | 93% | 6.3 |
| October | 91% | 5.0 |
| November | 88% | 3.8 |
| December | 84% | 3.1 |
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 much heating and cooling does Campo need?
A normal year in Campo brings 3,216 heating degree days, 40% fewer than the median U.S. place (5,373), and 818 cooling degree days, 10% fewer than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,575 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 522 | 0 |
| February | 472 | 0 |
| March | 461 | 0 |
| April | 348 | 2 |
| May | 210 | 21 |
| June | 68 | 80 |
| July | 9 | 240 |
| August | 5 | 281 |
| September | 40 | 163 |
| October | 171 | 30 |
| November | 361 | 2 |
| December | 550 | 0 |
| Year (annual) | 3,216 | 818 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003164. 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.
Has Campo been warmer than normal lately?
Over 55 complete years from 1951 to 2019, the station's annual mean temperature rose at a fitted 5.2°F per century (+0.29°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Campo's climate compare?
Campo is warmer than 67 of the other 218 places with their own NOAA record in California, and wetter than 70. Across the 7,247 U.S. stations with normals, its annual mean of 58.4°F is warmer than 70%.
In the Köppen classification computed from these normals, Campo is Csa: temperate, dry-summer, hot summer. 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 Campo share this climate record?
3 places have no NOAA station with 1991-2020 normals of their 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.
- Jacumba, CA880 people · 16 mi E
- Boulevard, CA502 people · 11 mi E
- Potrero, CA423 people · 8 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Campo's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Campo. This page uses Campo Asos; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Campo station USC00041424 | 1 mi S | 2,630 ft | 59.6°F | 35°F | 94°F | 15.6 | 0 | April 30 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Campo's climate
What is the coldest month in Campo?
December, with a normal high of 61°F and a normal low of 34°F. The warmest is August (93°F by day, 55°F at night).
Does it snow in Campo?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Campo's NOAA station; Campo's own co-op station Campo station records 0 inches of snow in a normal year.
What is the rainiest month in Campo?
February, with 2.83 in of precipitation in a normal year; the driest is June with 0.06 in.
What plant hardiness zone is Campo in?
The USDA's 2023 map puts Campo in zone 9a in ZIP code 91906. By the same method at Campo's NOAA station, the coldest night of a typical year reaches 19°F (17 years, 1991-2020): zone 8b.
How late can frost come in Campo?
In half of years the last 32°F night comes after April 29; in one year in ten it comes after June 1. Waiting until June 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Mount Laguna, CA17 miles from this station, 54.4°F a year
- Alpine, CA23 miles from this station, 62.6°F a year
- Cuyamaca, CA26 miles from this station, 54.0°F a year
- El Capitan Dam, CA27 miles from this station, 65.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made