Jurupa Valley, California climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Jurupa Valley's center at January lows of 43°F and July highs of 94°F, a yearly mean of 66.1°F and 12.3 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Riverside (4 miles SE, 805 ft), has January lows of 44°F and July highs of 93°F.
108,154 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 69° 43°
- Feb 69° 44°
- Mar 72° 46°
- Apr 77° 49°
- May 80° 54°
- Jun 87° 58°
- Jul 94° 63°
- Aug 95° 64°
- Sep 92° 61°
- Oct 83° 55°
- Nov 75° 47°
- Dec 68° 42°
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 Jurupa Valley's center.
What is each month like in Jurupa 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. | Riverside high | Riverside low |
|---|---|---|---|---|---|---|
| January | 69°F | 43°F | 55.8°F | 2.84 | 68°F | 44°F |
| February | 69°F | 44°F | 56.7°F | 3.23 | 68°F | 45°F |
| March | 72°F | 46°F | 59.4°F | 1.73 | 72°F | 47°F |
| April | 77°F | 49°F | 62.8°F | 0.70 | 76°F | 50°F |
| May | 80°F | 54°F | 67.1°F | 0.24 | 80°F | 55°F |
| June | 87°F | 58°F | 72.7°F | 0.04 | 87°F | 59°F |
| July | 94°F | 63°F | 78.2°F | 0.04 | 93°F | 64°F |
| August | 95°F | 64°F | 79.4°F | 0.05 | 95°F | 65°F |
| September | 92°F | 61°F | 76.3°F | 0.12 | 91°F | 62°F |
| October | 83°F | 55°F | 69.0°F | 0.44 | 83°F | 55°F |
| November | 75°F | 47°F | 61.0°F | 0.84 | 75°F | 47°F |
| December | 68°F | 42°F | 54.8°F | 2.00 | 67°F | 43°F |
In metric: a yearly mean of 18.9°C, January lows of 6°C, July highs of 34°C and 312 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 Jurupa 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 |
|---|---|---|---|---|---|---|---|---|
| RiversideRiverside Municipal Airport | 4 mi SE | 805 ft | 66.2°F | 44°F | 93°F | 9.4 | – | January 9 |
| OntarioOntario International Airport | 8 mi NW | 949 ft | 66.8°F | 45°F | 94°F | 11.6 | – | January 4 |
| ChinoChino Airport | 10 mi W | 650 ft | 66.1°F | 42°F | 94°F | 10.0 | – | January 17 |
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 Jurupa Valley?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Riverside (4 miles SE, 805 ft). NOAA publishes no snowfall normal for it; the nearest record that has one, Riverside Fire Station 3 (6 miles away), gets 0 inches a year. The last spring frost (32°F) comes after January 9 in half of years and the first autumn frost before December 30. Its record high is 118°F (1917) and its record low 19°F (1950), on the National Weather Service's long record for the area (kept since 1893).
The USDA's 2023 Plant Hardiness Zone Map puts Jurupa Valley in zone 10a across its 2 ZIP code areas.
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.4 kWh per square metre a day, NASA POWER 2001-2020); August is the sunniest month (92%) and February the cloudiest (83%).
Riverside'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 Jurupa Valley; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USW00003171; 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 Jurupa Valley, ZIP code by ZIP code?
2 ZIP code areas lie wholly or partly in Jurupa Valley. On NOAA's grid 92509 is the warmest (66.2°F a year) and 91752 the coolest (66.0°F), so the city is nearly uniform. 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 |
|---|---|---|---|---|---|---|---|---|
| 91752 | 10a | 66.0°F | 43°F | 93°F | 11.1 | Ontario (6 mi) | January 4 | December 30 |
| 92509 | 10a | 66.2°F | 44°F | 94°F | 12.8 | Riverside (4 mi) | January 9 | December 30 |
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.