As of 16:44 CDT

Weather in Fairfield, IL

71°

Fairfield, Saturday, 10 October, 16:44

Overcast. Feels like 70°. High 74°, low 56°.

Pressure30.03 inHg

Wind3.4 mph SE

Humidity46%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Sun, 1183° / 51°

83 °

Fairfield, Sunday, 11 October

Clear. High 83°, low 51°.

Pressure30.00 inHg

Wind5.7 mph NW

Humidity56%

Visibility6.2 mi

Dew point57°

Mon, 1287° / 58°

87 °

Fairfield, Monday, 12 October

Clear. High 87°, low 58°.

Pressure29.97 inHg

Wind10.7 mph SW

Humidity45%

Visibility6.2 mi

Dew point60°

Tue, 1389° / 67°

89 °

Fairfield, Tuesday, 13 October

Clear. High 89°, low 67°.

Pressure29.91 inHg

Wind10.6 mph SW

Humidity46%

Visibility6.2 mi

Dew point62°

Wed, 1478° / 73°

0.24

78 °

Fairfield, Wednesday, 14 October

Rain. High 78°, low 73°.

Pressure30.00 inHg

Wind6.2 mph SW

Humidity84%

Visibility6.2 mi

Dew point72°

Thu, 1578° / 67°

0.31

78 °

Fairfield, Thursday, 15 October

Light rain. High 78°, low 67°.

Pressure30.09 inHg

Wind9.4 mph NE

Humidity83%

Visibility—

Dew point70°

Fri, 1670° / 49°

0.22

70 °

Fairfield, Friday, 16 October

Rain. High 70°, low 49°.

Pressure30.12 inHg

Wind18.3 mph NW

Humidity46%

Visibility—

Dew point43°

Sat, 1744° / 36°

44 °

Fairfield, Saturday, 17 October

Overcast. High 44°, low 36°.

Pressure30.30 inHg

Wind18.5 mph NW

Humidity50%

Visibility—

Dew point22°

Sun, 1850° / 32°

50 °

Fairfield, Sunday, 18 October

Clear. High 50°, low 32°.

Pressure30.56 inHg

Wind13.7 mph NW

Humidity28%

Visibility—

Dew point15°

Mon, 1954° / 33°

54 °

Fairfield, Monday, 19 October

Mostly clear. High 54°, low 33°.

Pressure30.65 inHg

Wind7.2 mph SE

Humidity28%

Visibility—

Dew point18°

Tue, 2061° / 36°

61 °

Fairfield, Tuesday, 20 October

Clear. High 61°, low 36°.

Pressure30.45 inHg

Wind7.7 mph S

Humidity29%

Visibility—

Dew point24°

Wed, 2167° / 42°

67 °

Fairfield, Wednesday, 21 October

Clear. High 67°, low 42°.

Pressure30.33 inHg

Wind8.9 mph S

Humidity28%

Visibility—

Dew point28°

Thu, 2270° / 46°

70 °

Fairfield, Thursday, 22 October

Clear. High 70°, low 46°.

Pressure30.30 inHg

Wind11.6 mph S

Humidity26%

Visibility—

Dew point30°

Fri, 2358° / 50°

0.26

58 °

Fairfield, Friday, 23 October

Rain. High 58°, low 50°.

Pressure30.18 inHg

Wind10 mph NW

Humidity66%

Visibility—

Dew point44°

Sat, 2452° / 41°

0.02

52 °

Fairfield, Saturday, 24 October

Light rain. High 52°, low 41°.

Pressure30.12 inHg

Wind12 mph N

Humidity71%

Visibility—

Dew point40°

Sun, 2555° / 50°

0.04

55 °

Fairfield, Sunday, 25 October

Light rain. High 55°, low 50°.

Pressure30.06 inHg

Wind14.6 mph N

Humidity79%

Visibility—

Dew point47°

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.