Home / Local Weather & Traffic / Illinois / Farmington / Weather Forecast

Farmington, IL Weather Forecast for 5-Days

Updated: Sun Apr 12th 2026 7:45 AM CDT

Ask About Weather

Test our newly developed Weather Chatbot. It provides up to 10 days of forecast information!
Farmington, IL Weather – 4-12 – Scattered Showers
83° / 57°
Scattered Showers
Daytime highs will reach 83°F with lows dropping to 57°F in Farmington, where showers likely at times. The chance of rain is 80% with an estimated 0.09in. Winds will be strong at speeds peaking at 21mph and gusts of 31.8mph at 7 PM. The humidity will be on the higher side, averaging about 73%, the maximum being 95% at 9 PM and 46% being its lowest at 4 PM. Barometric pressure is its highest of 30.02inHg at 8 AM, a lowest point of 29.82inHg at 7 PM with an avg 29.91inHg.
Farmington, IL Weather – 4-13 – Heavy Rain
74° / 61°

Weather Tomorrow

Heavy Rain
Farmington could see rain showers with daytime highs of 74°F and nighttime lows near 61°F. The chance of rain is 85% with an estimated 0.88in. Wind will be moderate, blowing around 19mph on average and gusts of 32mph at 10 PM. High humidity with average of 91% is anticipated, the maximum being 98% at 3 AM and 80% being its lowest at 7 PM. Barometric pressure is its highest of 29.89inHg at 10 AM, a lowest point of 29.75inHg at 7 PM with an avg 29.83inHg.
Farmington, IL Weather – 4-14 – Scattered Thunderstorms
80° / 66°
Scattered Thunderstorms
Thunder and lightning are likely in Farmington, with a high of 80°F and a low of 66°F. Winds will be strong at speeds peaking at 23mph and gusts of 40.4mph at 8 PM. High humidity with average of 86% is anticipated, the maximum being 98% at 6 AM and 68% being its lowest at 4 PM. Barometric pressure is its highest of 29.87inHg at 7 AM, a lowest point of 29.76inHg at 9 PM with an avg 29.81inHg.
Farmington, IL Weather – 4-15 – Moderate Rain
76° / 61°
Moderate Rain
Rain is in the forecast for Farmington, with a high of 76°F and a low of 61°F. The chance of rain is 87% with an estimated 0.5in. Wind will be moderate, blowing around 20mph on average and gusts of 38.2mph at 1 AM. High humidity with average of 83% is anticipated, the maximum being 95% at 6 AM and 66% being its lowest at 1 PM. Barometric pressure is its highest of 29.83inHg at 10 PM, a lowest point of 29.71inHg at 1 PM with an avg 29.74inHg.
Farmington, IL Weather – 4-16 – Scattered Showers
79° / 60°
Scattered Showers
Passing showers are in the forecast for Farmington, with a high of 79°F and a low of 60°F. The chance of rain is 76% with an estimated 0.1in. Winds will be strong at speeds peaking at 21mph and gusts of 31.6mph at 3 AM. The humidity will be on the higher side, averaging about 75%, the maximum being 94% at 2 AM and 37% being its lowest at 4 PM. Barometric pressure is its highest of 29.97inHg at 10 AM, a lowest point of 29.66inHg at 5 AM with an avg 29.83inHg.
Farmington, IL Weather – 4-17 – Scattered Showers
71° / 61°
Scattered Showers
Farmington may see passing showers, with daytime highs of 71°F and overnight lows near 61°F. The chance of rain is 85% with an estimated 0.04in. Winds will be strong at speeds peaking at 21mph and gusts of 26.3mph at 4 PM. High humidity with average of 85% is anticipated, the maximum being 94% at 5 AM and 76% being its lowest at 4 PM. Barometric pressure is its highest of 29.89inHg at 12 AM, a lowest point of 29.62inHg at 11 PM with an avg 29.78inHg.

Currently

Sunny 60°F
30.02 inHg.
Barometer
80%
Humidity
S 23.8 mph
Wind
Sunny

5 Day Forecast Nearby

More Local Information

Bookmark and Share

Get the LocalConditions.com App on Google Play
Sign up for a membership to go Ad free

Farmington weather forecast and traffic updates by locals

Write your own Farmington, IL report, forecast, or traffic update:


Will not be posted, shared or used for marketing!

Please note by clicking on "Post" you acknowledge that you have read our Privacy Policy and Terms of Service and the Farmington, IL report and/or forecast you are posting is in compliance with such terms. If you are under 18, do not submit this form. Be respectful! Inappropriate content will be removed by a moderator.