🇺🇸 Weather in Fairfield
Current Weather in Fairfield
Small Craft Advisory issued September 3 at 8:13AM PDT until September 3 at 5:00PM PDT by NWS San Francisco CA
18°C
Feels like 17°C. Patchy rain nearby.
Map Overlays:
Hourly Forecast for Fairfield
20:00
17°
43%
21:00
18°
20%
22:00
18°
10%
23:00
16°
9%
00:00
14°
13%
01:00
14°
14%
02:00
14°
14%
03:00
14°
14%
04:00
13°
15%
05:00
12°
19%
06:00
12°
20%
07:00
12°
20%
08:00
14°
10%
09:00
17°
4%
10:00
20°
2%
11:00
22°
1%
12:00
23°
1%
13:00
24°
0%
14:00
25°
0%
15:00
26°
0%
16:00
25°
0%
17:00
24°
0%
18:00
23°
1%
19:00
20°
1%
14-Day Forecast for Fairfield
2026-09-03
Patchy rain nearby
23° /
15°
2026-09-04
Sunny
26° /
12°
2026-09-05
Sunny
27° /
11°
2026-09-06
Sunny
26° /
12°
2026-09-07
Sunny
30° /
11°
2026-09-08
Overcast
26° /
13°
2026-09-09
Overcast
24° /
14°
Additional Forecasts for Fairfield
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 128.0 μg/m³
O₃ (Ozone) 50.0 μg/m³
NO₂ (Nitrogen Dioxide) 3.6 μg/m³
SO₂ (Sulphur Dioxide) 1.2 μg/m³
PM2.5 (Fine particles) 1.3 μg/m³
PM10 (Coarse particles) 1.6 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in Fairfield — FAQ
Answers refreshed each request based on current conditions in Fairfield.
What is the weather like right now in Fairfield?
Right now in Fairfield, United States the temperature is 18.4°C (feels like 17.2°C), with patchy rain nearby. Relative humidity is 82% and wind is 14.8 km/h.
What is today's high and low temperature in Fairfield?
Today's forecast high in Fairfield is 22.9°C and the overnight low is 15.4°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Fairfield today?
The chance of precipitation in Fairfield today is 67%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Fairfield differ from nearby cities?
Even short distances can change temperatures noticeably. Fairfield's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.