Mecca, California climate: Normal weather by month, frost dates and records
Mecca's normal year runs from 42°F December nights to 107°F July afternoons, with 3.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.7°C, December lows of 6°C, July highs of 41°C, 77 mm of precipitation a year.
- NOAA stationMecca Fire Station
- Station IDUSC00045502
- Location33.57°N 116.07°W
- Elevation-183 ft (-56 m)
- Population (census place)7,071
On October 14, the normal high in Mecca is 92°F and the normal low 63°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 Mecca.
- Jan 70° 44°
- Feb 74° 47°
- Mar 81° 54°
- Apr 87° 59°
- May 95° 66°
- Jun 103° 72°
- Jul 107° 80°
- Aug 106° 80°
- Sep 102° 74°
- Oct 91° 62°
- Nov 78° 50°
- Dec 69° 42°
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 Mecca each month?
July is the warmest month, with normal highs of 107°F; December the coldest, with normal lows of 42°F. The most precipitation falls in January (0.60 in), the least in June (0.00 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 70°F | 44°F | 57.2°F | 0.60 | 3 | <1 | 2 | 10 h 10 min |
| February | 74°F | 47°F | 60.6°F | 0.56 | 2 | 1 | 1 | 11 h |
| March | 81°F | 54°F | 67.3°F | 0.32 | 1 | 7 | <1 | 12 h |
| April | 87°F | 59°F | 73.0°F | 0.17 | 1 | 16 | <1 | 13 h |
| May | 95°F | 66°F | 80.4°F | 0.01 | <1 | 25 | <1 | 13 h 50 min |
| June | 103°F | 72°F | 87.4°F | 0.00 | <1 | 30 | <1 | 14 h 20 min |
| July | 107°F | 80°F | 93.3°F | 0.21 | 1 | 31 | <1 | 14 h 10 min |
| August | 106°F | 80°F | 93.2°F | 0.08 | 1 | 31 | <1 | 13 h 30 min |
| September | 102°F | 74°F | 87.6°F | 0.30 | 1 | 30 | <1 | 12 h 30 min |
| October | 91°F | 62°F | 76.6°F | 0.23 | 1 | 23 | <1 | 11 h 20 min |
| November | 78°F | 50°F | 64.2°F | 0.20 | 1 | 3 | 1 | 10 h 30 min |
| December | 69°F | 42°F | 55.5°F | 0.37 | 1 | <1 | 4 | 10 h |
| Year (annual) | 88°F | 61°F | 74.7°F | 3.05 | 11 | 196 | 8 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 21°C | 7°C | 14.0°C | 15 mm |
| February | 23°C | 8°C | 15.9°C | 14 mm |
| March | 27°C | 12°C | 19.6°C | 8 mm |
| April | 31°C | 15°C | 22.8°C | 4 mm |
| May | 35°C | 19°C | 26.9°C | 0 mm |
| June | 39°C | 22°C | 30.8°C | 0 mm |
| July | 41°C | 27°C | 34.1°C | 5 mm |
| August | 41°C | 27°C | 34.0°C | 2 mm |
| September | 39°C | 23°C | 30.9°C | 8 mm |
| October | 33°C | 17°C | 24.8°C | 6 mm |
| November | 26°C | 10°C | 17.9°C | 5 mm |
| December | 21°C | 6°C | 13.1°C | 9 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00045502; 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 Mecca?
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 USC00045502.
When is the last frost in Mecca?
In Mecca, the last spring frost (32°F) comes after January 6 in half of years and after February 4 in one year in ten; the first autumn frost comes before December 22 in half of years and before December 4 in one year in ten. A night at 32°F or colder comes at all in 70% 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 61 year in 10 after February 4; 9 in 10 after December 13
- First autumn frost, half of years before
- December 221 year in 10 before December 4; 9 in 10 before January 14
NOAA puts the median frost-free season at 352 days, and the season without a hard freeze (28°F) at 365 days.
A hard freeze (28°F) comes after January 7 in half of springs and before January 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mecca in zone 10a in ZIP code 92254.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00045502; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Mecca?
In a normal year in Mecca, 196 days a year reach 90°F (128 of them 100°F or more), 8 nights fall to 32°F or colder and 11 days bring measurable precipitation.
- Days at 90°F or more
- 196a normal year
- Days at 100°F or more
- 128a normal year
- Nights at 32°F or colder
- 8a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 11a normal year
The highest temperature in this station's record (since 1905) is 126°F, on September 2, 1950; the lowest is 13°F, on January 8, 1913.
The wettest calendar year on that record is 1976, with 8.36 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00045502; records: ACIS (NOAA Regional Climate Centers), station USC00045502. Records use complete months only; a month missing more than three days is left out.
How sunny is Mecca?
Over a year 91% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mecca, 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 much heating and cooling does Mecca need?
A normal year in Mecca brings 836 heating degree days, 84% fewer than the median U.S. place (5,373), and 4,404 cooling degree days, 4.9 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 9,062 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 247 | 4 |
| February | 145 | 20 |
| March | 45 | 116 |
| April | 7 | 249 |
| May | 1 | 480 |
| June | 0 | 672 |
| July | 0 | 877 |
| August | 0 | 874 |
| September | 0 | 678 |
| October | 3 | 364 |
| November | 91 | 67 |
| December | 297 | 2 |
| Year (annual) | 836 | 4,404 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00045502. 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 Mecca been warmer than normal lately?
Over 50 complete years from 1913 to 2018, the station's annual mean temperature rose at a fitted 3.1°F per century (+0.17°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 Mecca's climate compare?
Mecca is warmer than 215 of the other 218 places with their own NOAA record in California, and wetter than 4. Across the 7,247 U.S. stations with normals, its annual mean of 74.7°F is warmer than 99%.
In the Köppen classification computed from these normals, Mecca 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 Mecca share this climate record?
4 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.
- Oasis, CA4,455 people · 4 mi SW
- North Shore, CA3,373 people · 10 mi E
- Desert Shores, CA457 people · 12 mi S
- Salton Sea Beach, CA198 people · 14 mi S
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 Mecca's climate
What is the coldest month in Mecca?
December, with a normal high of 69°F and a normal low of 42°F. The warmest is July (107°F by day, 80°F at night).
Does it snow in Mecca?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Mecca?
January, with 0.60 in of precipitation in a normal year; the driest is June with 0.00 in.
What plant hardiness zone is Mecca in?
The USDA's 2023 map puts Mecca in zone 10a in ZIP code 92254.
How late can frost come in Mecca?
In half of years the last 32°F night comes after January 6; in one year in ten it comes after February 4. Waiting until February 4 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Desert Resorts Regional Airport, CA6 miles from this station, 72.5°F a year
- Indio, CA12 miles from this station, 75.9°F a year
- Chiriaco Summit, CA21 miles from this station, 69.4°F a year
- Hayfield Pumping Plant, CA27 miles from this station, 70.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made