Fremont, California Weather
August begins in scorching stillness. Day 43 of summer. Read this microseason across nine climate regions →
Fremont weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayAug 2Overcast——90°58°—
- MondayAug 3Clear——92°57°+2°
- TuesdayAug 4Clear——91°60°-1°
- WednesdayAug 5Clear——89°63°-2°
- ThursdayAug 6Clear——90°62°+1°
- FridayAug 7Clear——91°63°+1°
- SaturdayAug 8Clear——93°63°+2°
AQI 53 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.8 µg/m³ (AQI 49) with a 0.88 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 8.8 µg/m³ (AQI 49) with a 0.88 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.88
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
Red sky at night, sailor's delight.
- Moonrise
- 9:53 PM
- Moonset
- 10:18 AM
- In sign
- ♓︎ Pisces
August begins in scorching stillness
Fremont at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: April 1 (climatological average for this latitude)
- Microseason: Aug 1–5
- Planting window: Sow fall peas. Start kale and collard seedlings for fall.
ZIP codes: 94536, 94538, 94539, 94555
16-Day Forecast — Fremont
- Sun90°58°0%
- Mon92°57°0%
- Tue91°60°0%
- Wed89°63°0%
- Thu90°62°0%
- Fri91°63°0%
- Sat93°63°0%
- Sun87°64°0%
- Mon87°63°0%
- Tue85°63°0%
- Wed84°60°1%
- Thu83°60°3%
- Fri86°61°3%
- Sat79°61°0%
- Sun84°60°3%
- Mon90°59°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Fremont
Right now in the garden
Peak growing season
As of August 2, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Sun & seasons in Fremont
Fremont sits in Alameda County, where the year’s longest day runs 14h 45m of daylight and its shortest just 9h 34m — a swing of +5h 11m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Los Angeles, the state’s largest city, lies about 309 miles to the SE. The nearest town Fremont tracks is Hayward, roughly 9 miles to the NW.
Air quality in Fremont’s county has trended cleaner since 2020; its cleanest year on record was 2023 (median AQI 48). See the full air-quality history for Fremont.
Microseason · August 1–5
August begins in scorching stillness
Calm days dominate early August; temperatures peak; the entire ecosystem is in survival mode.
Day 214 of 365 · Wedge 43 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Fremont peaks at about 68°F in August and bottoms near 51°F in December; February brings the heaviest rain (3.2 inches) and July the least (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 51° | 3.0″ | 6 |
| February | 53° | 3.2″ | 7 |
| March | 56° | 2.5″ | 6 |
| April | 58° | 1.2″ | 4 |
| May | 62° | 0.5″ | 2 |
| June | 65° | 0.2″ | 0 |
| July | 67° | 0.0″ | 0 |
| August | 68° | 0.0″ | 0 |
| September | 67° | 0.1″ | 0 |
| October | 63° | 0.7″ | 2 |
| November | 55° | 1.6″ | 4 |
| December | 51° | 3.0″ | 7 |
Regional context
By the nearest station's NOAA NCEI 1991-2020 normals, Fremont sees 51°F Januarys and 67°F Julys, a 17°F range, plus around 15.9 inches of precipitation across 37 days.
Fremont's moisture rides winter storm tracks: February brings 3.2 inches over 6.8 wet days, while July sees only 0.0 inches across 0.0 days in the dry warm season. That cool-season-wet pattern aligns Fremont with places like Newark, CA, Union City, CA and Sunol, CA.
Fremont rarely sees a hard freeze — its coldest month sits near 51°F — so planting spans most of the calendar. Heat peaks in August around 68°F, which confines cool-season crops to the shoulders of summer. Fremont's coastal lots stay 4-7°F milder overnight than Fremont's inland parcels.
Similar climates: Newark, CA, Union City, CA, Sunol, CA, Milpitas, CA, Hayward, CA.
Naturalist notes
California poppies begin their peak bloom across Fremont's open spaces during late April and early May.
Anna's hummingbirds start their courtship displays in February, diving and calling from perches throughout the area.
Frequently asked
- When does it freeze in Fremont?
- In Fremont, expect the last spring frost near mid-April; Fremont's first autumn frost comes around mid-November.
- What is the rainy season in Fremont?
- Fremont sees its heaviest rain in February (around 3.2 inches), part of roughly 16 inches a year.
- What is the warmest month in Fremont?
- On average August tops the year in Fremont at about 68°F.
- What is the coldest month in Fremont?
- The coldest stretch in Fremont falls in December, around 51°F on average.
- When can I start a vegetable garden in Fremont?
- In Fremont, sow peas and hardy greens around mid-April; Fremont's tomatoes and peppers wait two weeks more.
- How many rainy days does Fremont get?
- Expect roughly 37 wet days a year in Fremont.
- What hardiness zone is Fremont?
- Because Fremont bottoms near 51°F in December, that winter low sets Fremont's USDA zone — verify by ZIP.
- What is the 10-day forecast for Fremont?
- Fremont's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Fremont?
- See this week's day-by-day rain chances for Fremont in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Fremont?
- Current conditions for Fremont and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Fremont forecast updated?
- The Fremont forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Fremont?
- Today's sunrise and sunset times for Fremont are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Fremont?
- The next few days in Fremont's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
In Fremont, California, the hot-summer Mediterranean climate runs from about 51°F in January to 67°F in July, a 16°F seasonal range.
Rain and snow bring Fremont roughly 16 inches a year across approximately 37 measurable-precipitation days.
Fremont's 16°F range, set by its 37.5°N position, drives frost timing and what thrives in Fremont.
ZIP codes in Fremont
- 94560
- 94536
- 94538
- 94539
- 94555
- 94537