Parker Resrvoir, California climate: Climate normals at a NOAA weather station
Parker Resrvoir's normal year runs from 43°F December nights to 107°F July afternoons, with 5.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.4°C, December lows of 6°C, July highs of 42°C, 150 mm of precipitation a year.
- NOAA stationParker Resrvoir
- Station IDUSC00046699
- Location34.29°N 114.17°W
- Elevation738 ft (225 m)
On October 23, the normal high in Parker Resrvoir is 86°F and the normal low 60°F, and the chance of measurable rain or snow is 5%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Parker Resrvoir.
- Jan 66° 43°
- Feb 70° 47°
- Mar 77° 53°
- Apr 85° 59°
- May 94° 68°
- Jun 104° 77°
- Jul 107° 83°
- Aug 107° 82°
- Sep 101° 75°
- Oct 89° 63°
- Nov 75° 51°
- Dec 64° 43°
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 Parker Resrvoir each month?
July is the warmest month, with normal highs of 107°F; December the coldest, with normal lows of 43°F. The most precipitation falls in January (1.03 in), the least in June (0.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 66°F | 43°F | 54.4°F | 1.03 | 4 | <1 | 1 | 10 h 10 min |
| February | 70°F | 47°F | 58.2°F | 0.95 | 4 | <1 | <1 | 11 h |
| March | 77°F | 53°F | 65.0°F | 0.77 | 3 | 3 | <1 | 11 h 50 min |
| April | 85°F | 59°F | 71.8°F | 0.19 | 1 | 10 | <1 | 13 h |
| May | 94°F | 68°F | 80.7°F | 0.08 | 1 | 23 | <1 | 14 h |
| June | 104°F | 77°F | 90.2°F | 0.01 | <1 | 29 | <1 | 14 h 30 min |
| July | 107°F | 83°F | 95.1°F | 0.43 | 2 | 31 | <1 | 14 h 10 min |
| August | 107°F | 82°F | 94.5°F | 0.49 | 2 | 31 | <1 | 13 h 30 min |
| September | 101°F | 75°F | 88.0°F | 0.57 | 2 | 28 | <1 | 12 h 30 min |
| October | 89°F | 63°F | 75.7°F | 0.39 | 2 | 17 | <1 | 11 h 20 min |
| November | 75°F | 51°F | 63.2°F | 0.28 | 1 | 1 | <1 | 10 h 20 min |
| December | 64°F | 43°F | 53.4°F | 0.70 | 3 | <1 | 1 | 9 h 50 min |
| Year (annual) | 86°F | 62°F | 74.2°F | 5.89 | 24 | 173 | 2 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 19°C | 6°C | 12.4°C | 26 mm |
| February | 21°C | 8°C | 14.6°C | 24 mm |
| March | 25°C | 12°C | 18.3°C | 20 mm |
| April | 29°C | 15°C | 22.1°C | 5 mm |
| May | 34°C | 20°C | 27.1°C | 2 mm |
| June | 40°C | 25°C | 32.3°C | 0 mm |
| July | 42°C | 28°C | 35.1°C | 11 mm |
| August | 42°C | 28°C | 34.7°C | 12 mm |
| September | 38°C | 24°C | 31.1°C | 14 mm |
| October | 31°C | 17°C | 24.3°C | 10 mm |
| November | 24°C | 11°C | 17.3°C | 7 mm |
| December | 18°C | 6°C | 11.9°C | 18 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046699; 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 Parker Resrvoir?
Normal highs sit between 65°F and 85°F in January, February, March, April and November. Of those, April 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 USC00046699.
When is the last frost at Parker Resrvoir?
In Parker Resrvoir, the last spring frost (32°F) comes after January 7 in half of years and after February 6 in one year in ten; the first autumn frost comes before December 31 in half of years and before December 10 in one year in ten. A night at 32°F or colder comes at all in 51% 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 71 year in 10 after February 6; 9 in 10 after December 17
- First autumn frost, half of years before
- December 311 year in 10 before December 10; 9 in 10 before January 28
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 Parker Resrvoir in zone 10a in ZIP code 92267, the nearest ZIP area.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00046699; 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 at Parker Resrvoir?
In a normal year in Parker Resrvoir, 173 days a year reach 90°F (115 of them 100°F or more), 2 nights fall to 32°F or colder and 24 days bring measurable precipitation.
- Days at 90°F or more
- 173a normal year
- Days at 100°F or more
- 115a normal year
- Nights at 32°F or colder
- 2a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 24a normal year
The highest temperature in this station's record (since 1934) is 124°F, on July 1, 1950; the lowest is 21°F, on January 22, 1937.
The wettest calendar year on that record is 1978, with 13.67 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00046699; records: ACIS (NOAA Regional Climate Centers), station USC00046699. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Parker Resrvoir?
Over a year 93% of the sunlight that would reach the ground under clear skies gets through the clouds at Parker Resrvoir, 5.8 kWh per square metre a day. June is the sunniest month (97%) and December the cloudiest (86%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 87% | 3.4 |
| February | 88% | 4.4 |
| March | 91% | 5.8 |
| April | 93% | 7.2 |
| May | 95% | 8.1 |
| June | 97% | 8.6 |
| July | 93% | 7.7 |
| August | 94% | 7.2 |
| September | 95% | 6.3 |
| October | 94% | 4.9 |
| November | 91% | 3.7 |
| December | 86% | 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 Parker Resrvoir record?
A normal year at Parker Resrvoir brings 1,129 heating degree days, 79% fewer than the median U.S. place (5,373), and 4,511 cooling degree days, 5.0 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 8,907 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 331 | 0 |
| February | 200 | 10 |
| March | 88 | 86 |
| April | 21 | 227 |
| May | 3 | 488 |
| June | 0 | 756 |
| July | 0 | 933 |
| August | 0 | 914 |
| September | 0 | 690 |
| October | 9 | 341 |
| November | 118 | 65 |
| December | 360 | 1 |
| Year (annual) | 1,129 | 4,511 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046699. 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 Parker Resrvoir been warmer than normal?
2024 averaged 76.2°F, 2.0°F above the 1991-2020 normal of 74.2°F. 2 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 75.4°F | +1.2°F | 5.44 |
| 2023 | 73.9°F | −0.3°F | 4.22 |
| 2024 | 76.2°F | +2.0°F | 4.18 |
Over 49 complete years from 1935 to 2025, the station's annual mean temperature rose at a fitted 2.6°F per century (+0.14°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00046699; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Parker Resrvoir's climate compare?
Parker Resrvoir is warmer than 214 of the 219 places with their own NOAA record in California, and wetter than 18. Across the 7,247 U.S. stations with normals, its annual mean of 74.2°F is warmer than 98%.
In the Köppen classification computed from these normals, Parker Resrvoir 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 Parker Resrvoir 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.
- Cienega Springs, AZ1,640 people · 7 mi S
- Bluewater, AZ804 people · 10 mi SW
- Parker Strip, AZ767 people · 3 mi SE
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 Parker Resrvoir's climate
What is the coldest month at Parker Resrvoir?
December, with a normal high of 64°F and a normal low of 43°F. The warmest is July (107°F by day, 83°F at night).
Does it snow at Parker Resrvoir?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Parker Resrvoir?
January, with 1.03 in of precipitation in a normal year; the driest is June with 0.01 in.
What plant hardiness zone is Parker Resrvoir in?
The USDA's 2023 map puts Parker Resrvoir in zone 10a in ZIP code 92267, the nearest ZIP area.
How late can frost come at Parker Resrvoir?
In half of years the last 32°F night comes after January 7; in one year in ten it comes after February 6. Waiting until February 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Parker, AZ12 miles from this station, 74.1°F a year
- Lake Havasu City, AZ18 miles from this station, 74.2°F a year
- Bouse, AZ25 miles from this station, 71.3°F a year
- Alamo Dam, AZ34 miles from this station, 69.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made