As of 06:37 CDT

Weather in Fairfield, IL

63°

Fairfield, Sunday, 11 October, 06:37

Overcast. Feels like 62°. High 81°, low 58°.

Pressure29.97 inHg

Wind0 mph N

Humidity82%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Mon, 1289° / 59°

89 °

Fairfield, Monday, 12 October

Mostly clear. High 89°, low 59°.

Pressure29.97 inHg

Wind11.2 mph SW

Humidity43%

Visibility6.2 mi

Dew point59°

Tue, 1389° / 68°

89 °

Fairfield, Tuesday, 13 October

Clear. High 89°, low 68°.

Pressure29.91 inHg

Wind10.7 mph SW

Humidity44%

Visibility6.2 mi

Dew point61°

Wed, 1480° / 72°

0.17

80 °

Fairfield, Wednesday, 14 October

Light rain. High 80°, low 72°.

Pressure30.03 inHg

Wind8.2 mph SW

Humidity83%

Visibility6.2 mi

Dew point71°

Thu, 1579° / 69°

0.64

79 °

Fairfield, Thursday, 15 October

Rain. High 79°, low 69°.

Pressure30.06 inHg

Wind9.3 mph W

Humidity75%

Visibility—

Dew point69°

Fri, 1671° / 48°

0.07

71 °

Fairfield, Friday, 16 October

Light rain. High 71°, low 48°.

Pressure30.27 inHg

Wind17.6 mph N

Humidity50%

Visibility—

Dew point47°

Sat, 1745° / 34°

45 °

Fairfield, Saturday, 17 October

Overcast. High 45°, low 34°.

Pressure30.36 inHg

Wind21.5 mph NW

Humidity39%

Visibility—

Dew point19°

Sun, 1851° / 30°

51 °

Fairfield, Sunday, 18 October

Clear. High 51°, low 30°.

Pressure30.56 inHg

Wind9.6 mph NW

Humidity33%

Visibility—

Dew point19°

Mon, 1961° / 35°

61 °

Fairfield, Monday, 19 October

Clear. High 61°, low 35°.

Pressure30.39 inHg

Wind11.8 mph S

Humidity25%

Visibility—

Dew point19°

Tue, 2069° / 41°

69 °

Fairfield, Tuesday, 20 October

Clear. High 69°, low 41°.

Pressure30.30 inHg

Wind11.5 mph S

Humidity20%

Visibility—

Dew point21°

Wed, 2171° / 46°

71 °

Fairfield, Wednesday, 21 October

Overcast. High 71°, low 46°.

Pressure30.30 inHg

Wind10.8 mph S

Humidity27%

Visibility—

Dew point30°

Thu, 2274° / 51°

74 °

Fairfield, Thursday, 22 October

Clear. High 74°, low 51°.

Pressure30.30 inHg

Wind7.7 mph N

Humidity30%

Visibility—

Dew point37°

Fri, 2374° / 52°

74 °

Fairfield, Friday, 23 October

Clear. High 74°, low 52°.

Pressure30.30 inHg

Wind9 mph E

Humidity38%

Visibility—

Dew point42°

Sat, 2473° / 53°

73 °

Fairfield, Saturday, 24 October

Overcast. High 73°, low 53°.

Pressure30.12 inHg

Wind15.3 mph SW

Humidity53%

Visibility—

Dew point52°

Sun, 2559° / 40°

59 °

Fairfield, Sunday, 25 October

Clear. High 59°, low 40°.

Pressure30.36 inHg

Wind10.4 mph N

Humidity36%

Visibility—

Dew point29°

Mon, 2665° / 40°

65 °

Fairfield, Monday, 26 October

Clear. High 65°, low 40°.

Pressure30.12 inHg

Wind12 mph W

Humidity32%

Visibility—

Dew point29°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Fairfield, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Fairfield, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.