Fremont, California climate: Normal weather by month, frost dates and records
Fremont's normal year runs from 43°F December nights to 78°F August afternoons, with 15.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.3°C, December lows of 6°C, August highs of 26°C, 405 mm of precipitation a year.
- NOAA stationFremont
- Station IDUSC00043244
- Location37.54°N 122.02°W
- Elevation38 ft (12 m)
- From the center5 miles
- Population228,192
On October 23, the normal high in Fremont is 72°F and the normal low 51°F, and the chance of measurable rain or snow is 12%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Fremont.
- Jan 59° 43°
- Feb 61° 44°
- Mar 65° 46°
- Apr 68° 48°
- May 71° 52°
- Jun 75° 55°
- Jul 78° 57°
- Aug 78° 57°
- Sep 78° 56°
- Oct 73° 52°
- Nov 65° 46°
- Dec 58° 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 in Fremont each month?
August is the warmest month, with normal highs of 78°F; December the coldest, with normal lows of 43°F. The most precipitation falls in February (3.17 in), the least in July (0.00 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 59°F | 43°F | 50.6°F | 3.00 | 10 | <1 | 1 | 9 h 50 min |
| February | 61°F | 44°F | 52.9°F | 3.17 | 10 | <1 | <1 | 10 h 50 min |
| March | 65°F | 46°F | 55.8°F | 2.52 | 10 | <1 | <1 | 11 h 50 min |
| April | 68°F | 48°F | 58.0°F | 1.22 | 6 | <1 | <1 | 13 h 10 min |
| May | 71°F | 52°F | 61.5°F | 0.50 | 3 | 1 | <1 | 14 h 10 min |
| June | 75°F | 55°F | 65.0°F | 0.16 | 1 | 3 | <1 | 14 h 40 min |
| July | 78°F | 57°F | 67.3°F | 0.00 | <1 | 2 | <1 | 14 h 30 min |
| August | 78°F | 57°F | 67.7°F | 0.02 | <1 | 3 | <1 | 13 h 40 min |
| September | 78°F | 56°F | 67.2°F | 0.10 | 1 | 4 | <1 | 12 h 30 min |
| October | 73°F | 52°F | 62.6°F | 0.69 | 3 | 1 | <1 | 11 h 20 min |
| November | 65°F | 46°F | 55.4°F | 1.59 | 7 | <1 | <1 | 10 h 10 min |
| December | 58°F | 43°F | 50.5°F | 2.97 | 10 | <1 | 1 | 9 h 40 min |
| Year (annual) | 69°F | 50°F | 59.5°F | 15.94 | 60 | 13 | 3 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 15°C | 6°C | 10.3°C | 76 mm |
| February | 16°C | 7°C | 11.6°C | 81 mm |
| March | 18°C | 8°C | 13.2°C | 64 mm |
| April | 20°C | 9°C | 14.4°C | 31 mm |
| May | 22°C | 11°C | 16.4°C | 13 mm |
| June | 24°C | 13°C | 18.3°C | 4 mm |
| July | 26°C | 14°C | 19.6°C | 0 mm |
| August | 26°C | 14°C | 19.8°C | 1 mm |
| September | 26°C | 13°C | 19.6°C | 3 mm |
| October | 23°C | 11°C | 17.0°C | 18 mm |
| November | 18°C | 8°C | 13.0°C | 40 mm |
| December | 15°C | 6°C | 10.3°C | 75 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00043244; 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.
When is the best weather to visit Fremont?
Normal highs sit between 65°F and 85°F in March, April, May, June, July, August, September and October. Of those, July has the fewest days with rain (0).
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 USC00043244.
When is the last frost in Fremont?
In Fremont, the last spring frost (32°F) comes after January 7 in half of years and after February 7 in one year in ten; the first autumn frost comes before December 22 in half of years and before December 2 in one year in ten. A night at 32°F or colder comes at all in 65% 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 7; 9 in 10 after December 14
- First autumn frost, half of years before
- December 221 year in 10 before December 2; 9 in 10 before January 21
NOAA puts the median frost-free season at 353 days, and the season without a hard freeze (28°F) at 365 days.
A hard freeze (28°F) comes after December 31 in half of springs and before December 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Fremont in zones 9b to 10a across its 5 ZIP code areas (9b in 94539, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Fremont's NOAA station is in zone 10a: the coldest night of a typical year reaches 31°F (22 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00043244; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Fremont ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Fremont's 5 ZIP code areas run from zone 9b to 10a: 3 in 10a and 2 in 9b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Fremont?
In a normal year in Fremont, 13 days a year reach 90°F, 3 nights fall to 32°F or colder and 60 days bring measurable precipitation.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 3a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 60a normal year
The highest temperature in this station's record (since 1996) is 108°F, on June 14, 2000; the lowest is 26°F, on January 13, 2007.
The wettest calendar year on that record is 1998, with 26.17 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00043244; records: ACIS (NOAA Regional Climate Centers), station USC00043244. Records use complete months only; a month missing more than three days is left out.
How sunny is Fremont?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Fremont, 4.7 kWh per square metre a day. June is the sunniest month (84%) and December the cloudiest (74%). Among the 459 U.S. places of 50,000 or more, that ranks tied 125th (with 50 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 76% | 2.5 |
| February | 77% | 3.4 |
| March | 79% | 4.6 |
| April | 82% | 6.0 |
| May | 81% | 6.7 |
| June | 84% | 7.3 |
| July | 78% | 6.5 |
| August | 77% | 5.8 |
| September | 82% | 5.1 |
| October | 83% | 4.0 |
| November | 81% | 2.8 |
| December | 74% | 2.1 |
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 much heating and cooling does Fremont need?
A normal year in Fremont brings 2,374 heating degree days, 56% fewer than the median U.S. place (5,373), and 391 cooling degree days, 57% fewer than the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,622 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 446 | 0 |
| February | 339 | 0 |
| March | 289 | 2 |
| April | 218 | 8 |
| May | 133 | 25 |
| June | 56 | 56 |
| July | 15 | 88 |
| August | 11 | 93 |
| September | 24 | 88 |
| October | 103 | 31 |
| November | 289 | 1 |
| December | 451 | 0 |
| Year (annual) | 2,374 | 391 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00043244. 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.
Has Fremont been warmer than normal lately?
2025 averaged 58.5°F, 1.0°F below the 1991-2020 normal of 59.5°F. 0 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.9°F | −1.6°F | 14.09 |
| 2022 | 57.6°F | −1.9°F | 12.78 |
| 2023 | 57.2°F | −2.3°F | 21.99 |
| 2024 | 59.1°F | −0.4°F | 19.12 |
| 2025 | 58.5°F | −1.0°F | 12.57 |
Source: observed years: ACIS, station USC00043244. A year counts only with all twelve months complete.
How does Fremont's climate compare?
Fremont is warmer than 84 of the other 218 places with their own NOAA record in California, and wetter than 110. Across the 7,247 U.S. stations with normals, its annual mean of 59.5°F is warmer than 73%.
In the Köppen classification computed from these normals, Fremont is Csb: temperate, dry-summer, warm summer. 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 Fremont share this climate record?
2 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.
- Union City, CAalso near: Newark (6 mi, 59.9°F a year); Hayward (6 mi, 59.6°F a year)66,196 people · 4 mi N
- Sunol, CA931 people · 8 mi E
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 Fremont's climate
What is the coldest month in Fremont?
December, with a normal high of 58°F and a normal low of 43°F. The warmest is August (78°F by day, 57°F at night).
Does it snow in Fremont?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Fremont?
February, with 3.17 in of precipitation in a normal year; the driest is July with 0.00 in.
What plant hardiness zone is Fremont in?
The USDA's 2023 map puts Fremont in zones 9b to 10a across its 5 ZIP code areas (9b in 94539, the largest). By the same method at Fremont's NOAA station, the coldest night of a typical year reaches 31°F (22 years, 1991-2020): zone 10a.
How late can frost come in Fremont?
In half of years the last 32°F night comes after January 7; in one year in ten it comes after February 7. Waiting until February 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Fremont in OctoberThis month day by day, its records and recent years
- California climateThe statewide normals and every place in the state
- Newark, CA2 miles from this station, 59.9°F a year
- Hayward, CA9 miles from this station, 59.6°F a year
- Sunnyvale, CA9 miles from this station, 59.9°F a year
- Palo Alto, CA10 miles from this station, 58.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made