Local Forecast

Fairfield, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Fairfield, IL.

Active Alerts 4 active

Hour-by-Hour  Current Observation

Sunday 4:35 AM CDTSunday 4:35 AM

°F °C
Regional Observations →
71°F

Fog

  • 91° / 73° High / Low
  • 71° Feels Like
  • 0% Chance of Rain

Wind

0 mph

N

UV Index

0

None

Humidity

0%

Dew 0°F

Sun

5:31 AM · 8:21 PM

Rise · Set

Source: FLORA (KFOA). Slider scrubs the next 12 hours.

5-Day Outlook

Through Thursday

Local Radar →

Today

91° 73°

Mostly Cloudy

Overnight: Partly Sunny

Detailed forecast

Today

A chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 91. Heat index values as high as 105. South southwest wind 1 to 7 mph. Chance of precipitation is 30%.

Night

Mostly clear. Low around 73, with temperatures rising to around 75 overnight. Heat index values as high as 105. South wind 3 to 7 mph.

Monday

93° 75°

Partly Sunny

Overnight: Mostly Clear

Detailed forecast

Monday

Sunny, with a high near 93. Heat index values as high as 105. South southwest wind 3 to 8 mph.

Night

Mostly clear, with a low around 74. South southwest wind 3 to 8 mph.

Tuesday

95° 75°

Mostly Sunny

Overnight: Clear

Detailed forecast

Tuesday

Sunny, with a high near 95. South southwest wind around 5 mph.

Night

Clear, with a low around 74. South wind 1 to 5 mph.

Wednesday

95° 75°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Wednesday

Sunny, with a high near 94. South wind around 3 mph.

Night

Mostly clear, with a low around 75. South southeast wind around 2 mph.

Thursday

93° 75°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Thursday

Sunny, with a high near 93. South wind 0 to 3 mph.

Night

Mostly clear, with a low around 75. South wind around 2 mph.

Fairfield, IL Weather Analysis Tools