As of 02:34 CDT

Weather in Grimsby, IL

61°

Grimsby, Thursday, 8 October, 02:34

Clear. Feels like 61°. High 84°, low 56°.

Pressure30.00 inHg

Wind4.6 mph N

Humidity88%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Fri, 0986° / 53°

86 °

Grimsby, Friday, 9 October

Clear. High 86°, low 53°.

Pressure30.15 inHg

Wind6.2 mph S

Humidity35%

Visibility6.2 mi

Dew point50°

Sat, 1080° / 61°

0.06

80 °

Grimsby, Saturday, 10 October

Light rain. High 80°, low 61°.

Pressure30.12 inHg

Wind4.7 mph SE

Humidity48%

Visibility6.2 mi

Dew point58°

Sun, 1171° / 60°

0.45

71 °

Grimsby, Sunday, 11 October

Heavy rain. High 71°, low 60°.

Pressure29.91 inHg

Wind7 mph N

Humidity75%

Visibility6.2 mi

Dew point59°

Mon, 1284° / 58°

84 °

Grimsby, Monday, 12 October

Clear. High 84°, low 58°.

Pressure29.91 inHg

Wind10.4 mph S

Humidity51%

Visibility—

Dew point60°

Tue, 1373° / 64°

0.04

73 °

Grimsby, Tuesday, 13 October

Light rain. High 73°, low 64°.

Pressure29.97 inHg

Wind10.5 mph N

Humidity56%

Visibility—

Dew point56°

Wed, 1478° / 55°

78 °

Grimsby, Wednesday, 14 October

Overcast. High 78°, low 55°.

Pressure30.03 inHg

Wind8.8 mph E

Humidity49%

Visibility—

Dew point46°

Thu, 1593° / 70°

93 °

Grimsby, Thursday, 15 October

Clear. High 93°, low 70°.

Pressure29.91 inHg

Wind17.6 mph S

Humidity42%

Visibility—

Dew point63°

Fri, 1689° / 68°

0.17

89 °

Grimsby, Friday, 16 October

Rain. High 89°, low 68°.

Pressure30.00 inHg

Wind19.2 mph SW

Humidity45%

Visibility—

Dew point62°

Sat, 1759° / 52°

0.04

59 °

Grimsby, Saturday, 17 October

Light rain. High 59°, low 52°.

Pressure30.24 inHg

Wind12.9 mph NW

Humidity43%

Visibility—

Dew point33°

Sun, 1862° / 42°

62 °

Grimsby, Sunday, 18 October

Clear. High 62°, low 42°.

Pressure30.30 inHg

Wind10.6 mph N

Humidity39%

Visibility—

Dew point33°

Mon, 1967° / 41°

67 °

Grimsby, Monday, 19 October

Clear. High 67°, low 41°.

Pressure30.27 inHg

Wind6.4 mph NE

Humidity31%

Visibility—

Dew point30°

Tue, 2073° / 46°

73 °

Grimsby, Tuesday, 20 October

Partly cloudy. High 73°, low 46°.

Pressure30.15 inHg

Wind4.2 mph NW

Humidity27%

Visibility—

Dew point33°

Wed, 2166° / 48°

66 °

Grimsby, Wednesday, 21 October

Overcast. High 66°, low 48°.

Pressure30.15 inHg

Wind10 mph NE

Humidity42%

Visibility—

Dew point39°

Thu, 2258° / 54°

58 °

Grimsby, Thursday, 22 October

Overcast. High 58°, low 54°.

Pressure29.80 inHg

Wind11.1 mph S

Humidity78%

Visibility—

Dew point50°

Fri, 2359° / 52°

0.06

59 °

Grimsby, Friday, 23 October

Light rain. High 59°, low 52°.

Pressure29.80 inHg

Wind8.2 mph SW

Humidity94%

Visibility—

Dew point52°

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 Grimsby, 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 Grimsby, 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.