Milpitas, California climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Milpitas's center at January lows of 40°F and July highs of 84°F, a yearly mean of 60.4°F and 14.3 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, San Jose (5 miles S, 51 ft), has January lows of 42°F and July highs of 81°F.
79,746 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 59° 40°
- Feb 63° 43°
- Mar 67° 45°
- Apr 71° 46°
- May 75° 50°
- Jun 81° 54°
- Jul 84° 57°
- Aug 84° 56°
- Sep 82° 55°
- Oct 77° 50°
- Nov 66° 44°
- Dec 59° 40°
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 Milpitas's center.
What is each month like in Milpitas?
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. | San Jose high | San Jose low |
|---|---|---|---|---|---|---|
| January | 59°F | 40°F | 49.9°F | 2.71 | 60°F | 42°F |
| February | 63°F | 43°F | 53.1°F | 2.85 | 62°F | 44°F |
| March | 67°F | 45°F | 55.8°F | 2.27 | 66°F | 46°F |
| April | 71°F | 46°F | 58.5°F | 1.12 | 69°F | 48°F |
| May | 75°F | 50°F | 62.9°F | 0.47 | 74°F | 52°F |
| June | 81°F | 54°F | 67.5°F | 0.09 | 79°F | 56°F |
| July | 84°F | 57°F | 70.0°F | 0.00 | 81°F | 58°F |
| August | 84°F | 56°F | 69.9°F | 0.02 | 81°F | 59°F |
| September | 82°F | 55°F | 68.5°F | 0.08 | 81°F | 57°F |
| October | 77°F | 50°F | 63.4°F | 0.64 | 76°F | 53°F |
| November | 66°F | 44°F | 55.2°F | 1.47 | 66°F | 46°F |
| December | 59°F | 40°F | 49.6°F | 2.63 | 60°F | 42°F |
In metric: a yearly mean of 15.8°C, January lows of 5°C, July highs of 29°C and 364 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 Milpitas 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 |
|---|---|---|---|---|---|---|---|---|
| San Jose | 5 mi S | 51 ft | 60.7°F | 42°F | 81°F | 13.5 | – | January 12 |
| SunnyvaleMoffett Federal Airfield | 9 mi W | 39 ft | 59.9°F | 42°F | 77°F | 13.4 | – | January 6 |
| Newark | 10 mi NW | 10 ft | 59.9°F | 43°F | 77°F | 14.4 | 0 | January 1 |
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 Milpitas?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, San Jose (5 miles S, 51 ft). NOAA publishes no snowfall normal for it; the nearest record that has one, Newark (10 miles NW), gets 0 inches a year. The last spring frost (32°F) comes after January 12 in half of years and the first autumn frost before December 22. Its record high is 109°F (2022) and its record low 18°F (1894), on the National Weather Service's long record for the area (kept since 1893).
The USDA's 2023 Plant Hardiness Zone Map puts Milpitas in zone 10a (ZIP code 95035).
Over a year 89% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.3 kWh per square metre a day, NASA POWER 2001-2020); July is the sunniest month (97%) and January the cloudiest (74%).
San Jose'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 Milpitas; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USW00023293; 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 Milpitas, ZIP code by ZIP code?
One ZIP code area lies wholly or partly in Milpitas. 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.