Moreno Valley, California climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Moreno Valley's center at January lows of 42°F and July highs of 95°F, a yearly mean of 65.4°F and 14.2 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Redlands (8 miles N, 1,410 ft), has January lows of 41°F and July highs of 95°F.
213,919 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 66° 42°
- Feb 66° 43°
- Mar 70° 46°
- Apr 75° 49°
- May 80° 53°
- Jun 88° 58°
- Jul 95° 63°
- Aug 97° 64°
- Sep 92° 61°
- Oct 82° 54°
- Nov 73° 47°
- Dec 65° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Moreno Valley's center.
What is each month like in Moreno Valley?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Redlands high | Redlands low |
|---|---|---|---|---|---|---|
| January | 66°F | 42°F | 54.0°F | 3.12 | 67°F | 41°F |
| February | 66°F | 43°F | 54.7°F | 3.61 | 67°F | 42°F |
| March | 70°F | 46°F | 58.0°F | 2.11 | 71°F | 45°F |
| April | 75°F | 49°F | 61.6°F | 0.93 | 76°F | 48°F |
| May | 80°F | 53°F | 66.1°F | 0.33 | 80°F | 52°F |
| June | 88°F | 58°F | 73.0°F | 0.06 | 89°F | 56°F |
| July | 95°F | 63°F | 79.1°F | 0.09 | 95°F | 63°F |
| August | 97°F | 64°F | 80.5°F | 0.08 | 96°F | 63°F |
| September | 92°F | 61°F | 76.4°F | 0.19 | 92°F | 60°F |
| October | 82°F | 54°F | 68.3°F | 0.52 | 83°F | 53°F |
| November | 73°F | 47°F | 60.0°F | 0.92 | 75°F | 45°F |
| December | 65°F | 41°F | 53.2°F | 2.26 | 67°F | 40°F |
In metric: a yearly mean of 18.6°C, January lows of 6°C, July highs of 35°C and 361 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Moreno Valley say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Redlands | 8 mi N | 1,410 ft | 65.2°F | 41°F | 95°F | 12.9 | 0 | January 27 |
| RiversideRiverside Municipal Airport | 13 mi W | 805 ft | 66.2°F | 44°F | 93°F | 9.4 | – | January 9 |
| San Jacinto | 16 mi SE | 1,525 ft | 65.0°F | 40°F | 95°F | 12.2 | 0 | January 31 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Moreno Valley?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Redlands (8 miles N, 1,410 ft). It gets 0 inches of snow in a normal year. The last spring frost (32°F) comes after January 27 in half of years and the first autumn frost before December 19. Its record high is 118°F (2006) and its record low 18°F (1913) (kept since 1898).
The USDA's 2023 Plant Hardiness Zone Map puts Moreno Valley in zone 9b across its 4 ZIP code areas.
Over a year 92% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.8 kWh per square metre a day, NASA POWER 2001-2020); August is the sunniest month (96%) and December the cloudiest (85%).
Redlands's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Moreno Valley; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00047306; records: ACIS; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Moreno Valley, ZIP code by ZIP code?
4 ZIP code areas lie wholly or partly in Moreno Valley. On NOAA's grid 92557 is the warmest (65.8°F a year) and 92555 the coolest (64.9°F), a spread of 0.9°F. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 92551 | 9b | 65.1°F | 41°F | 95°F | 11.5 | Redlands (11 mi) | January 27 | December 19 |
| 92553 | 9b | 65.4°F | 42°F | 95°F | 13.2 | Redlands (8 mi) | January 27 | December 19 |
| 92555 | 9b | 64.9°F | 40°F | 96°F | 13.3 | Redlands (10 mi) | January 27 | December 19 |
| 92557 | 9b | 65.8°F | 45°F | 94°F | 15.4 | Redlands (6 mi) | January 27 | December 19 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.