As of 22:33 CDT

Weather in Fullerton, IL

61°

Fullerton, Thursday, 8 October, 22:33

Partly cloudy. Feels like 60°. High 78°, low 49°.

Pressure30.09 inHg

Wind5 mph E

Humidity68%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Fri, 0981° / 54°

0.02

81 °

Fullerton, Friday, 9 October

Light rain. High 81°, low 54°.

Pressure30.12 inHg

Wind10.7 mph S

Humidity35%

Visibility6.2 mi

Dew point48°

Sat, 1083° / 58°

83 °

Fullerton, Saturday, 10 October

Overcast. High 83°, low 58°.

Pressure30.09 inHg

Wind8 mph SE

Humidity42%

Visibility6.2 mi

Dew point51°

Sun, 1175° / 58°

75 °

Fullerton, Sunday, 11 October

Overcast. High 75°, low 58°.

Pressure29.91 inHg

Wind7.2 mph N

Humidity60%

Visibility6.2 mi

Dew point57°

Mon, 1286° / 59°

86 °

Fullerton, Monday, 12 October

Clear. High 86°, low 59°.

Pressure29.88 inHg

Wind9.7 mph SW

Humidity46%

Visibility6.2 mi

Dew point58°

Tue, 1384° / 69°

84 °

Fullerton, Tuesday, 13 October

Clear. High 84°, low 69°.

Pressure29.83 inHg

Wind11.3 mph W

Humidity55%

Visibility—

Dew point64°

Wed, 1471° / 60°

0.07

71 °

Fullerton, Wednesday, 14 October

Light rain. High 71°, low 60°.

Pressure30.03 inHg

Wind11.7 mph NE

Humidity62%

Visibility—

Dew point53°

Thu, 1589° / 65°

0.31

89 °

Fullerton, Thursday, 15 October

Light rain. High 89°, low 65°.

Pressure29.83 inHg

Wind20.2 mph SW

Humidity42%

Visibility—

Dew point60°

Fri, 1672° / 51°

0.11

72 °

Fullerton, Friday, 16 October

Light rain. High 72°, low 51°.

Pressure30.12 inHg

Wind12.8 mph NW

Humidity61%

Visibility—

Dew point47°

Sat, 1752° / 43°

52 °

Fullerton, Saturday, 17 October

Clear. High 52°, low 43°.

Pressure30.47 inHg

Wind16.4 mph N

Humidity41%

Visibility—

Dew point27°

Sun, 1855° / 38°

55 °

Fullerton, Sunday, 18 October

Overcast. High 55°, low 38°.

Pressure30.47 inHg

Wind7.6 mph E

Humidity38%

Visibility—

Dew point25°

Mon, 1956° / 41°

56 °

Fullerton, Monday, 19 October

Overcast. High 56°, low 41°.

Pressure30.47 inHg

Wind8.9 mph E

Humidity40%

Visibility—

Dew point29°

Tue, 2053° / 47°

0.02

53 °

Fullerton, Tuesday, 20 October

Light rain. High 53°, low 47°.

Pressure30.33 inHg

Wind7 mph E

Humidity63%

Visibility—

Dew point39°

Wed, 2169° / 47°

69 °

Fullerton, Wednesday, 21 October

Clear. High 69°, low 47°.

Pressure30.18 inHg

Wind9 mph SW

Humidity55%

Visibility—

Dew point47°

Thu, 2268° / 53°

68 °

Fullerton, Thursday, 22 October

Clear. High 68°, low 53°.

Pressure30.15 inHg

Wind10.7 mph NE

Humidity56%

Visibility—

Dew point50°

Fri, 2359° / 47°

59 °

Fullerton, Friday, 23 October

Mostly clear. High 59°, low 47°.

Pressure30.27 inHg

Wind14.1 mph NE

Humidity44%

Visibility—

Dew point36°

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 Fullerton, 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 Fullerton, 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.