Chino Hills, California climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Chino Hills's center at January lows of 46°F and July highs of 89°F, a yearly mean of 65.8°F and 14.3 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Chino (6 miles NE, 650 ft), has January lows of 42°F and July highs of 94°F.
77,418 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 68° 46°
- Feb 68° 47°
- Mar 70° 49°
- Apr 74° 50°
- May 77° 55°
- Jun 83° 58°
- Jul 89° 63°
- Aug 91° 64°
- Sep 89° 63°
- Oct 81° 57°
- Nov 74° 51°
- Dec 67° 45°
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 Chino Hills's center.
What is each month like in Chino Hills?
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. | Chino high | Chino low |
|---|---|---|---|---|---|---|
| January | 68°F | 46°F | 56.9°F | 3.20 | 70°F | 42°F |
| February | 68°F | 47°F | 57.1°F | 3.61 | 70°F | 43°F |
| March | 70°F | 49°F | 59.5°F | 2.12 | 73°F | 46°F |
| April | 74°F | 50°F | 62.2°F | 0.82 | 77°F | 49°F |
| May | 77°F | 55°F | 65.8°F | 0.35 | 81°F | 54°F |
| June | 83°F | 58°F | 70.6°F | 0.05 | 88°F | 59°F |
| July | 89°F | 63°F | 76.1°F | 0.04 | 94°F | 63°F |
| August | 91°F | 64°F | 77.8°F | 0.02 | 96°F | 63°F |
| September | 89°F | 63°F | 75.8°F | 0.14 | 93°F | 60°F |
| October | 81°F | 57°F | 69.3°F | 0.54 | 85°F | 53°F |
| November | 74°F | 51°F | 62.3°F | 0.95 | 76°F | 45°F |
| December | 67°F | 45°F | 56.1°F | 2.42 | 69°F | 40°F |
In metric: a yearly mean of 18.8°C, January lows of 8°C, July highs of 32°C and 362 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 Chino Hills 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 |
|---|---|---|---|---|---|---|---|---|
| ChinoChino Airport | 6 mi NE | 650 ft | 66.1°F | 42°F | 94°F | 10.0 | – | January 17 |
| Anaheim | 9 mi SW | 235 ft | 67.7°F | 49°F | 87°F | 13.5 | 0 | – |
| PomonaPomona/Fairplex | 10 mi N | 999 ft | 65.0°F | 43°F | 90°F | 14.5 | 0 | January 8 |
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 Chino Hills?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Chino (6 miles NE, 650 ft). NOAA publishes no snowfall normal for it; the nearest record that has one, Anaheim (9 miles SW), gets 0 inches a year. The last spring frost (32°F) comes after January 17 in half of years and the first autumn frost before December 19. Its record high is 121°F (2020) and its record low 20°F (2007) (kept since 1998).
The USDA's 2023 Plant Hardiness Zone Map puts Chino Hills in zone 10a (ZIP code 91709).
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%).
Chino'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 Chino Hills; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USW00003179; 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 Chino Hills, ZIP code by ZIP code?
One ZIP code area lies wholly or partly in Chino Hills. Each row also names the nearest station record and its frost dates.
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.