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Fairfield, IL Weather Forecast
Fairfield, IL Weather Forecast Dated: 509 AM Thu Nov 12 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and a stable pattern will dominate.
Thursday, November 12, 2026
Mid-Morning
51°F 10°C
Scattered Showers
Mid-Afternoon
48°F 9°C
Overcast
Early-Evening
42°F 6°C
Clear
Brisk around 48°F 9°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the NW to the NNW at 13 mph 21 km/h. Gusts up to 24 mph 38 km/h.
Friday, November 13, 2026
Mid-Morning
40°F 5°C
Cloudy
Mid-Afternoon
45°F 7°C
Overcast
Early-Evening
40°F 4°C
Partly Cloudy
Cool and brisk at 45°F 7°C, cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds blowing from the NNW at 13 mph 22 km/h.
Saturday, November 14, 2026
Mid-Morning
39°F 4°C
Sunny
Mid-Afternoon
48°F 9°C
Sunny
Early-Evening
39°F 4°C
Clear
Chilly near 48°F 9°C, sunny throughout the day, with steady humidity and steady pressure.
Sunday, November 15, 2026
Mid-Morning
41°F 5°C
Partly Cloudy
Mid-Afternoon
51°F 10°C
Partly Cloudy
Early-Evening
41°F 5°C
Clear
Crisp with a high near 51°F 10°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure.
Monday, November 16, 2026
Mid-Morning
44°F 6°C
Sunny
Mid-Afternoon
54°F 12°C
Sunny
Early-Evening
43°F 6°C
Clear
Brisk around 54°F 12°C, sunny throughout the day, with steady humidity and steady pressure.
Tuesday, November 17, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
53°F 11°C
Sunny
Early-Evening
45°F 7°C
Clear
Cool and brisk at 53°F 11°C, sunny throughout the day, with steady humidity and steady pressure.
Wednesday, November 18, 2026
Mid-Morning
47°F 8°C
Partly Cloudy
Mid-Afternoon
56°F 13°C
Partly Cloudy
Early-Evening
48°F 9°C
Partly Cloudy
Chilly near 56°F 13°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.
Thursday, November 19, 2026
Mid-Morning
50°F 10°C
Cloudy
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
53°F 12°C
Cloudy
Cool with a high near 59°F 15°C, overcast throughout the day, with steady humidity and steady pressure. Winds S at 9 mph 15 km/h.
Friday, November 20, 2026
Mid-Morning
58°F 14°C
Cloudy
Mid-Afternoon
63°F 17°C
Partly Cloudy
Early-Evening
54°F 12°C
Partly Cloudy
Refreshing around 63°F 17°C, cloudy through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure.
Saturday, November 21, 2026
Mid-Morning
54°F 12°C
Partly Cloudy
Mid-Afternoon
61°F 16°C
Partly Cloudy
Early-Evening
54°F 12°C
Partly Cloudy
Mildly cool near 61°F 16°C, cloudy in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure.
Sunday, November 22, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
63°F 17°C
Scattered Showers
Early-Evening
59°F 16°C
Scattered Showers
Comfortable at 63°F 17°C, scattered downpours possible, with steady humidity and barometric pressure falling. Winds swinging from the S to the SW at 9 mph 13 km/h. Gusts up to 21 mph 34 km/h.
Monday, November 23, 2026
Mid-Morning
47°F 9°C
Partly Cloudy
Mid-Afternoon
51°F 11°C
Cloudy
Early-Evening
46°F 8°C
Overcast
Crisp with a high near 51°F 11°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds shifting from the W to the WNW at 7 mph 11 km/h.
Tuesday, November 24, 2026
Mid-Morning
46°F 8°C
Cloudy
Mid-Afternoon
47°F 8°C
Scattered Showers
Early-Evening
45°F 7°C
Light Showers
Brisk around 47°F 8°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds NW at 9 mph 15 km/h.
Wednesday, November 25, 2026
Mid-Morning
42°F 6°C
Partly Cloudy
Mid-Afternoon
46°F 8°C
Cloudy
Early-Evening
37°F 3°C
Partly Cloudy
Cool and brisk at 46°F 8°C, cloudy through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds out of the NW at 9 mph 14 km/h.
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