Brawley, California climate: Normal weather by month, frost dates and records
Brawley's normal year runs from 41°F December nights to 108°F August afternoons, with 2.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.2°C, December lows of 5°C, August highs of 42°C, 60 mm of precipitation a year.
- NOAA stationBrawley (2 mi SW)
- Station IDUSC00041048
- Location32.95°N 115.56°W
- Elevation-100 ft (-30 m)
- Population28,188
On October 23, the normal high in Brawley is 90°F and the normal low 58°F, and the chance of measurable rain or snow is 2%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Brawley.
- Jan 72° 41°
- Feb 75° 45°
- Mar 81° 50°
- Apr 87° 54°
- May 95° 61°
- Jun 104° 68°
- Jul 108° 77°
- Aug 108° 78°
- Sep 104° 71°
- Oct 93° 60°
- Nov 80° 49°
- Dec 70° 41°
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 Brawley each month?
August is the warmest month, with normal highs of 108°F; December the coldest, with normal lows of 41°F. The most precipitation falls in February (0.50 in), the least in June (0.00 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 72°F | 41°F | 56.6°F | 0.47 | 3 | <1 | 2 | 10 h 10 min |
| February | 75°F | 45°F | 59.6°F | 0.50 | 3 | <1 | <1 | 11 h |
| March | 81°F | 50°F | 65.5°F | 0.31 | 3 | 4 | <1 | 12 h |
| April | 87°F | 54°F | 70.7°F | 0.10 | 1 | 10 | <1 | 13 h |
| May | 95°F | 61°F | 77.8°F | 0.01 | <1 | 24 | <1 | 13 h 50 min |
| June | 104°F | 68°F | 86.2°F | 0.00 | <1 | 29 | <1 | 14 h 20 min |
| July | 108°F | 77°F | 92.4°F | 0.03 | <1 | 31 | <1 | 14 h 10 min |
| August | 108°F | 78°F | 93.1°F | 0.07 | 1 | 31 | <1 | 13 h 20 min |
| September | 104°F | 71°F | 87.6°F | 0.09 | <1 | 29 | <1 | 12 h 30 min |
| October | 93°F | 60°F | 76.6°F | 0.14 | 1 | 20 | <1 | 11 h 30 min |
| November | 80°F | 49°F | 64.4°F | 0.19 | 1 | 2 | 1 | 10 h 30 min |
| December | 70°F | 41°F | 55.3°F | 0.47 | 2 | <1 | 3 | 10 h |
| Year (annual) | 90°F | 58°F | 73.8°F | 2.38 | 15 | 181 | 6 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 22°C | 5°C | 13.7°C | 12 mm |
| February | 24°C | 7°C | 15.3°C | 13 mm |
| March | 27°C | 10°C | 18.6°C | 8 mm |
| April | 31°C | 12°C | 21.5°C | 3 mm |
| May | 35°C | 16°C | 25.4°C | 0 mm |
| June | 40°C | 20°C | 30.1°C | 0 mm |
| July | 42°C | 25°C | 33.6°C | 1 mm |
| August | 42°C | 26°C | 33.9°C | 2 mm |
| September | 40°C | 22°C | 30.9°C | 2 mm |
| October | 34°C | 16°C | 24.8°C | 4 mm |
| November | 27°C | 9°C | 18.0°C | 5 mm |
| December | 21°C | 5°C | 12.9°C | 12 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00041048; 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 Brawley?
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 USC00041048.
When is the last frost in Brawley?
In Brawley, the last spring frost (32°F) comes after January 16 in half of years and after February 17 in one year in ten; the first autumn frost comes before December 19 in half of years and before December 2 in one year in ten. A night at 32°F or colder comes at all in 91% of years here (NOAA).
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- January 161 year in 10 after February 17; 9 in 10 after December 21
- First autumn frost, half of years before
- December 191 year in 10 before December 2; 9 in 10 before January 17
NOAA puts the median frost-free season at 335 days, and the season without a hard freeze (28°F) at 365 days.
A hard freeze (28°F) comes after January 2 in half of springs and before December 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Brawley in zone 9b in ZIP code 92281, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Brawley's NOAA station is in zone 9b: the coldest night of a typical year reaches 29°F (16 complete years).
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00041048; 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 Brawley?
In a normal year in Brawley, 181 days a year reach 90°F (121 of them 100°F or more), 6 nights fall to 32°F or colder and 15 days bring measurable precipitation.
- Days at 90°F or more
- 181a normal year
- Days at 100°F or more
- 121a normal year
- Nights at 32°F or colder
- 6a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 15a normal year
The highest temperature in this station's record (since 1910) is 122°F, on July 1, 1950; the lowest is 4°F, on January 1, 1919.
The wettest calendar year on that record is 1983, with 8.12 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00041048; records: ACIS (NOAA Regional Climate Centers), station USC00041048. Records use complete months only; a month missing more than three days is left out.
How sunny is Brawley?
Over a year 93% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Brawley, 5.9 kWh per square metre a day. June is the sunniest month (97%) and December the cloudiest (87%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 89% | 3.6 |
| February | 89% | 4.5 |
| March | 92% | 6.0 |
| April | 94% | 7.3 |
| May | 96% | 8.1 |
| June | 97% | 8.4 |
| July | 93% | 7.7 |
| August | 94% | 7.2 |
| September | 95% | 6.3 |
| October | 94% | 5.1 |
| November | 91% | 3.9 |
| December | 87% | 3.2 |
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 Brawley need?
A normal year in Brawley brings 909 heating degree days, 83% fewer than the median U.S. place (5,373), and 4,154 cooling degree days, 4.6 times the median (908). One month needs 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 8,739 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 265 | 3 |
| February | 160 | 10 |
| March | 69 | 85 |
| April | 18 | 191 |
| May | 2 | 397 |
| June | 0 | 636 |
| July | 0 | 849 |
| August | 0 | 871 |
| September | 0 | 676 |
| October | 3 | 363 |
| November | 89 | 72 |
| December | 303 | 1 |
| Year (annual) | 909 | 4,154 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00041048. 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.
How does Brawley's climate compare?
Brawley is warmer than 213 of the other 218 places with their own NOAA record in California, and wetter than 0. 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, Brawley 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 Brawley 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.
- Calipatria, CA6,522 people · 15 mi N
- Westmorland, CA2,045 people · 7 mi NW
- Niland, CA1,388 people · 20 mi N
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 Brawley's climate
What is the coldest month in Brawley?
December, with a normal high of 70°F and a normal low of 41°F. The warmest is August (108°F by day, 78°F at night).
Does it snow in Brawley?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Brawley?
February, with 0.50 in of precipitation in a normal year; the driest is June with 0.00 in.
What plant hardiness zone is Brawley in?
The USDA's 2023 map puts Brawley in zone 9b in ZIP code 92281, the nearest ZIP area. By the same method at Brawley's NOAA station, the coldest night of a typical year reaches 29°F (16 years, 1991-2020): zone 9b.
How late can frost come in Brawley?
In half of years the last 32°F night comes after January 16; in one year in ten it comes after February 17. Waiting until February 17 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Imperial, CA7 miles from this station, 73.0°F a year
- El Centro, CA9 miles from this station, 73.7°F a year
- Ocotillo Wells (2 mi W), CA38 miles from this station, 76.6°F a year
- Chiriaco Summit, CA50 miles from this station, 69.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made