As of 03:59 CDT

Weather in Salem, IL

39°

Salem, Sunday, 18 October, 03:59

Clear. Feels like 37°. High 64°, low 39°.

Pressure30.47 inHg

Wind3.4 mph E

Humidity100%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Mon, 1968° / 43°

68 °

Salem, Monday, 19 October

Clear. High 68°, low 43°.

Pressure30.39 inHg

Wind1.8 mph SW

Humidity48%

Visibility6.2 mi

Dew point44°

Tue, 2069° / 46°

69 °

Salem, Tuesday, 20 October

Clear. High 69°, low 46°.

Pressure30.36 inHg

Wind1.7 mph NE

Humidity47%

Visibility6.2 mi

Dew point46°

Wed, 2170° / 47°

70 °

Salem, Wednesday, 21 October

Clear. High 70°, low 47°.

Pressure30.30 inHg

Wind0.1 mph E

Humidity47%

Visibility6.2 mi

Dew point48°

Thu, 2271° / 48°

71 °

Salem, Thursday, 22 October

Clear. High 71°, low 48°.

Pressure30.24 inHg

Wind5 mph NE

Humidity43%

Visibility—

Dew point44°

Fri, 2369° / 51°

69 °

Salem, Friday, 23 October

Clear. High 69°, low 51°.

Pressure30.30 inHg

Wind8.3 mph E

Humidity52%

Visibility—

Dew point47°

Sat, 2476° / 55°

76 °

Salem, Saturday, 24 October

Overcast. High 76°, low 55°.

Pressure30.27 inHg

Wind12.1 mph SW

Humidity24%

Visibility—

Dew point33°

Sun, 2565° / 52°

65 °

Salem, Sunday, 25 October

Overcast. High 65°, low 52°.

Pressure30.42 inHg

Wind11.9 mph N

Humidity55%

Visibility—

Dew point45°

Mon, 2661° / 45°

61 °

Salem, Monday, 26 October

Overcast. High 61°, low 45°.

Pressure30.36 inHg

Wind9.2 mph E

Humidity28%

Visibility—

Dew point24°

Tue, 2773° / 54°

73 °

Salem, Tuesday, 27 October

Overcast. High 73°, low 54°.

Pressure30.18 inHg

Wind7 mph SW

Humidity39%

Visibility—

Dew point43°

Wed, 2875° / 58°

75 °

Salem, Wednesday, 28 October

Overcast. High 75°, low 58°.

Pressure30.00 inHg

Wind13.2 mph S

Humidity35%

Visibility—

Dew point41°

Thu, 2961° / 59°

0.74

61 °

Salem, Thursday, 29 October

Rain. High 61°, low 59°.

Pressure29.80 inHg

Wind7.1 mph S

Humidity92%

Visibility—

Dew point58°

Fri, 3074° / 56°

74 °

Salem, Friday, 30 October

Partly cloudy. High 74°, low 56°.

Pressure29.85 inHg

Wind9.8 mph SW

Humidity56%

Visibility—

Dew point53°

Sat, 3179° / 62°

0.05

79 °

Salem, Saturday, 31 October

Light rain. High 79°, low 62°.

Pressure29.85 inHg

Wind16.7 mph SW

Humidity60%

Visibility—

Dew point60°

Sun, 0182° / 64°

82 °

Salem, Sunday, 1 November

Clear. High 82°, low 64°.

Pressure30.03 inHg

Wind12.9 mph SW

Humidity53%

Visibility—

Dew point60°

Mon, 0280° / 66°

80 °

Salem, Monday, 2 November

Overcast. High 80°, low 66°.

Pressure30.12 inHg

Wind8.3 mph NE

Humidity52%

Visibility—

Dew point58°

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 Salem, 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 Salem, 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.