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As of 13:04 CDT

Weather in Calvin, IL

89°Current weather

Calvin, Saturday, 8 August, 13:04

Partly cloudy. Feels like 100°. High 89°, low 73°.

Pressure30.06 inHg
Wind5.1 mph W
Humidity64%
Visibility6.2 mi
Dew point75°
Sun, 0991° / 72°0Clear
91 °Clear

Calvin, Sunday, 9 August

Clear. High 91°, low 72°.

Pressure30.06 inHg
Wind9.6 mph S
Humidity65%
Visibility6.2 mi
Dew point73°
Mon, 1093° / 70°0Clear
93 °Clear

Calvin, Monday, 10 August

Clear. High 93°, low 70°.

Pressure30.00 inHg
Wind12.5 mph SW
Humidity59%
Visibility6.2 mi
Dew point73°
Tue, 1195° / 75°0Partly cloudy
95 °Partly cloudy

Calvin, Tuesday, 11 August

Partly cloudy. High 95°, low 75°.

Pressure29.94 inHg
Wind14.6 mph SW
Humidity53%
Visibility6.2 mi
Dew point72°
Wed, 1293° / 70°0.06Light rain
93 °Light rain

Calvin, Wednesday, 12 August

Light rain. High 93°, low 70°.

Pressure29.83 inHg
Wind11.5 mph W
Humidity55%
Visibility6.2 mi
Dew point72°
Thu, 1375° / 67°0.29Rain
75 °Rain

Calvin, Thursday, 13 August

Rain. High 75°, low 67°.

Pressure29.85 inHg
Wind12.5 mph NE
Humidity96%
Visibility—
Dew point72°
Fri, 1476° / 58°0Overcast
76 °Overcast

Calvin, Friday, 14 August

Overcast. High 76°, low 58°.

Pressure30.15 inHg
Wind9.5 mph NE
Humidity53%
Visibility—
Dew point54°
Sat, 1578° / 57°0Partly cloudy
78 °Partly cloudy

Calvin, Saturday, 15 August

Partly cloudy. High 78°, low 57°.

Pressure30.21 inHg
Wind7.9 mph E
Humidity55%
Visibility—
Dew point57°
Sun, 1672° / 63°0.48Rain
72 °Rain

Calvin, Sunday, 16 August

Rain. High 72°, low 63°.

Pressure30.12 inHg
Wind10.9 mph SE
Humidity97%
Visibility—
Dew point66°
Mon, 1790° / 71°0.24Rain
90 °Rain

Calvin, Monday, 17 August

Rain. High 90°, low 71°.

Pressure29.88 inHg
Wind10.7 mph NW
Humidity62%
Visibility—
Dew point71°
Tue, 1887° / 70°0.02Light rain
87 °Light rain

Calvin, Tuesday, 18 August

Light rain. High 87°, low 70°.

Pressure29.94 inHg
Wind7.8 mph N
Humidity59%
Visibility—
Dew point67°
Wed, 1992° / 68°1.01Heavy rain
92 °Heavy rain

Calvin, Wednesday, 19 August

Heavy rain. High 92°, low 68°.

Pressure29.91 inHg
Wind11.1 mph N
Humidity59%
Visibility—
Dew point71°
Thu, 2073° / 59°0Partly cloudy
73 °Partly cloudy

Calvin, Thursday, 20 August

Partly cloudy. High 73°, low 59°.

Pressure30.15 inHg
Wind14.4 mph NE
Humidity60%
Visibility—
Dew point56°
Fri, 2172° / 52°0Clear
72 °Clear

Calvin, Friday, 21 August

Clear. High 72°, low 52°.

Pressure30.21 inHg
Wind8.2 mph NE
Humidity48%
Visibility—
Dew point47°
Sat, 2274° / 53°0Clear
74 °Clear

Calvin, Saturday, 22 August

Clear. High 74°, low 53°.

Pressure30.15 inHg
Wind7.1 mph NE
Humidity50%
Visibility—
Dew point50°
Sun, 2377° / 55°0Clear
77 °Clear

Calvin, Sunday, 23 August

Clear. High 77°, low 55°.

Pressure30.12 inHg
Wind6.6 mph E
Humidity48%
Visibility—
Dew point51°

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.