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As of 01:06 CDT

Weather in Calvin, IL

66°Current weather

Calvin, Saturday, 10 October, 01:06

Overcast. Feels like 65°. High 74°, low 54°.

Pressure30.06 inHg
Wind6.4 mph SE
Humidity63%
Visibility6.2 mi
Dew point52°
Sun, 1179° / 53°0Clear
79 °Clear

Calvin, Sunday, 11 October

Clear. High 79°, low 53°.

Pressure29.94 inHg
Wind8.3 mph NW
Humidity59%
Visibility6.2 mi
Dew point58°
Mon, 1288° / 61°0Clear
88 °Clear

Calvin, Monday, 12 October

Clear. High 88°, low 61°.

Pressure29.97 inHg
Wind8.8 mph SW
Humidity46%
Visibility6.2 mi
Dew point60°
Tue, 1389° / 68°0Clear
89 °Clear

Calvin, Tuesday, 13 October

Clear. High 89°, low 68°.

Pressure29.91 inHg
Wind9.8 mph SW
Humidity49%
Visibility6.2 mi
Dew point64°
Wed, 1477° / 72°0.6Rain
77 °Rain

Calvin, Wednesday, 14 October

Rain. High 77°, low 72°.

Pressure30.00 inHg
Wind8.9 mph NE
Humidity94%
Visibility—
Dew point72°
Thu, 1574° / 64°1.25Heavy rain
74 °Heavy rain

Calvin, Thursday, 15 October

Heavy rain. High 74°, low 64°.

Pressure30.15 inHg
Wind11.7 mph SW
Humidity71%
Visibility—
Dew point61°
Fri, 1670° / 58°0.2Rain
70 °Rain

Calvin, Friday, 16 October

Rain. High 70°, low 58°.

Pressure29.97 inHg
Wind19.2 mph NW
Humidity53%
Visibility—
Dew point51°
Sat, 1752° / 41°0Overcast
52 °Overcast

Calvin, Saturday, 17 October

Overcast. High 52°, low 41°.

Pressure30.33 inHg
Wind19.4 mph NW
Humidity46%
Visibility—
Dew point29°
Sun, 1854° / 34°0Clear
54 °Clear

Calvin, Sunday, 18 October

Clear. High 54°, low 34°.

Pressure30.45 inHg
Wind6.5 mph N
Humidity37%
Visibility—
Dew point24°
Mon, 1961° / 38°0Partly cloudy
61 °Partly cloudy

Calvin, Monday, 19 October

Partly cloudy. High 61°, low 38°.

Pressure30.39 inHg
Wind7 mph E
Humidity30%
Visibility—
Dew point25°
Tue, 2067° / 46°0Overcast
67 °Overcast

Calvin, Tuesday, 20 October

Overcast. High 67°, low 46°.

Pressure30.27 inHg
Wind11.6 mph SE
Humidity38%
Visibility—
Dew point37°
Wed, 2167° / 51°0.13Light rain
67 °Light rain

Calvin, Wednesday, 21 October

Light rain. High 67°, low 51°.

Pressure30.12 inHg
Wind18.8 mph S
Humidity63%
Visibility—
Dew point50°
Thu, 2263° / 56°1.41Heavy rain
63 °Heavy rain

Calvin, Thursday, 22 October

Heavy rain. High 63°, low 56°.

Pressure29.74 inHg
Wind25.9 mph SW
Humidity84%
Visibility—
Dew point53°
Fri, 2368° / 56°0Overcast
68 °Overcast

Calvin, Friday, 23 October

Overcast. High 68°, low 56°.

Pressure29.97 inHg
Wind10.2 mph W
Humidity65%
Visibility—
Dew point53°
Sat, 2462° / 53°0Overcast
62 °Overcast

Calvin, Saturday, 24 October

Overcast. High 62°, low 53°.

Pressure30.03 inHg
Wind13.5 mph NW
Humidity55%
Visibility—
Dew point44°
Sun, 2561° / 43°0Mostly clear
61 °Mostly clear

Calvin, Sunday, 25 October

Mostly clear. High 61°, low 43°.

Pressure30.03 inHg
Wind9.8 mph SW
Humidity38%
Visibility—
Dew point33°

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 Calvin, 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 Calvin, 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.