Borrego Desert Park, California climate: Climate normals at a NOAA weather station
Borrego Desert Park's normal year runs from 45°F December nights to 107°F July afternoons, with 5.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.2°C, December lows of 7°C, July highs of 42°C, 132 mm of precipitation a year.
- NOAA stationBorrego Desert Park
- Station IDUSC00040983
- Location33.26°N 116.40°W
- Elevation810 ft (247 m)
On October 24, the normal high in Borrego Desert Park is 87°F and the normal low 59°F, and the chance of measurable rain or snow is 3%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Borrego Desert Park.
- Jan 70° 46°
- Feb 72° 47°
- Mar 79° 52°
- Apr 85° 56°
- May 93° 62°
- Jun 103° 70°
- Jul 107° 77°
- Aug 107° 78°
- Sep 101° 72°
- Oct 90° 62°
- Nov 78° 52°
- Dec 69° 45°
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 Borrego Desert Park each month?
July is the warmest month, with normal highs of 107°F; December the coldest, with normal lows of 45°F. The most precipitation falls in February (1.24 in), the least in June (0.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 70°F | 46°F | 57.6°F | 1.16 | 4 | <1 | 1 | 10 h 10 min |
| February | 72°F | 47°F | 59.8°F | 1.24 | 4 | <1 | <1 | 11 h |
| March | 79°F | 52°F | 65.3°F | 0.62 | 3 | 4 | <1 | 12 h |
| April | 85°F | 56°F | 70.5°F | 0.18 | 1 | 11 | <1 | 13 h |
| May | 93°F | 62°F | 77.7°F | 0.05 | 1 | 22 | <1 | 13 h 50 min |
| June | 103°F | 70°F | 86.2°F | 0.01 | <1 | 29 | <1 | 14 h 20 min |
| July | 107°F | 77°F | 92.3°F | 0.25 | 1 | 31 | <1 | 14 h 10 min |
| August | 107°F | 78°F | 92.1°F | 0.32 | 1 | 31 | <1 | 13 h 30 min |
| September | 101°F | 72°F | 86.4°F | 0.15 | 1 | 28 | <1 | 12 h 30 min |
| October | 90°F | 62°F | 76.0°F | 0.20 | 1 | 18 | <1 | 11 h 20 min |
| November | 78°F | 52°F | 64.9°F | 0.22 | 1 | 2 | <1 | 10 h 30 min |
| December | 69°F | 45°F | 56.8°F | 0.81 | 3 | <1 | <1 | 10 h |
| Year (annual) | 88°F | 60°F | 73.8°F | 5.21 | 22 | 177 | 1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 21°C | 8°C | 14.2°C | 29 mm |
| February | 22°C | 9°C | 15.4°C | 31 mm |
| March | 26°C | 11°C | 18.5°C | 16 mm |
| April | 30°C | 13°C | 21.4°C | 5 mm |
| May | 34°C | 17°C | 25.4°C | 1 mm |
| June | 39°C | 21°C | 30.1°C | 0 mm |
| July | 42°C | 25°C | 33.5°C | 6 mm |
| August | 42°C | 25°C | 33.4°C | 8 mm |
| September | 38°C | 22°C | 30.2°C | 4 mm |
| October | 32°C | 17°C | 24.4°C | 5 mm |
| November | 26°C | 11°C | 18.3°C | 6 mm |
| December | 20°C | 7°C | 13.8°C | 21 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00040983; 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 Borrego Desert Park?
Normal highs sit between 65°F and 85°F in January, February, March, November and December. Of those, November 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 USC00040983.
When is the last frost at Borrego Desert Park?
A night at 32°F or colder comes in only 45% of years in Borrego Desert Park (NOAA). NOAA's median date of the last spring frost is January 10 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 Borrego Desert Park in zone 9a in ZIP code 92066, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 10a: the coldest night of a typical year reaches 32°F (29 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 USC00040983; 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 at Borrego Desert Park?
In a normal year in Borrego Desert Park, 177 days a year reach 90°F (114 of them 100°F or more), 1 night falls to 32°F or colder and 22 days bring measurable precipitation.
- Days at 90°F or more
- 177a normal year
- Days at 100°F or more
- 114a 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
- 22a normal year
The highest temperature in this station's record (since 1965) is 122°F, on June 25, 1990; the lowest is 20°F, on January 5, 1971.
The wettest calendar year on that record is 1983, with 18.28 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00040983; records: ACIS (NOAA Regional Climate Centers), station USC00040983. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Borrego Desert Park?
Over a year 91% of the sunlight that would reach the ground under clear skies gets through the clouds at Borrego Desert Park, 5.8 kWh per square metre a day. June is the sunniest month (96%) and February the cloudiest (84%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 85% | 3.4 |
| February | 84% | 4.3 |
| March | 88% | 5.7 |
| April | 90% | 7.0 |
| May | 93% | 7.9 |
| June | 96% | 8.4 |
| July | 93% | 7.8 |
| August | 94% | 7.3 |
| September | 94% | 6.3 |
| October | 92% | 5.0 |
| November | 89% | 3.7 |
| December | 85% | 3.0 |
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 Borrego Desert Park record?
A normal year at Borrego Desert Park brings 880 heating degree days, 84% fewer than the median U.S. place (5,373), and 4,122 cooling degree days, 4.5 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 8,739 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 235 | 6 |
| February | 167 | 23 |
| March | 85 | 96 |
| April | 32 | 197 |
| May | 6 | 400 |
| June | 0 | 636 |
| July | 0 | 845 |
| August | 0 | 842 |
| September | 0 | 642 |
| October | 6 | 347 |
| November | 89 | 86 |
| December | 260 | 4 |
| Year (annual) | 880 | 4,122 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00040983. 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 Borrego Desert Park been warmer than normal?
2025 averaged 74.9°F, 1.1°F above the 1991-2020 normal of 73.8°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.5°F | +1.7°F | 3.08 |
| 2023 | 72.5°F | −1.3°F | 9.08 |
| 2024 | 75.2°F | +1.4°F | 1.98 |
| 2025 | 74.9°F | +1.1°F | 5.37 |
Over 46 complete years from 1970 to 2025, the station's annual mean temperature rose at a fitted 6.7°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 USC00040983; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Borrego Desert Park's climate compare?
Borrego Desert Park is warmer than 213 of the 219 places with their own NOAA record in California, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 73.8°F is warmer than 98%.
In the Köppen classification computed from these normals, Borrego Desert Park is BWh: hot desert. 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 Borrego Desert Park share this climate record?
Borrego Springs 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.
- Borrego Springs, CA2,781 people · 3 mi E
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 Borrego Desert Park's climate
What is the coldest month at Borrego Desert Park?
December, with a normal high of 69°F and a normal low of 45°F. The warmest is July (107°F by day, 77°F at night).
Does it snow at Borrego Desert Park?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Borrego Desert Park?
February, with 1.24 in of precipitation in a normal year; the driest is June with 0.01 in.
What plant hardiness zone is Borrego Desert Park in?
The USDA's 2023 map puts Borrego Desert Park in zone 9a in ZIP code 92066, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 32°F (29 years, 1991-2020): zone 10a.
Nearby and next
- California climateThe statewide normals and every place in the state
- Ocotillo Wells (2 mi W), CA16 miles from this station, 76.6°F a year
- Julian, CA17 miles from this station, 57.8°F a year
- Henshaw Dam, CA21 miles from this station, 57.5°F a year
- Cuyamaca, CA21 miles from this station, 54.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made