As of 06:25 CDT

Weather in Altamont, IL

61°

Altamont, Monday, 12 October, 06:25

Mostly clear. Feels like 61°. High 90°, low 61°.

Pressure29.97 inHg

Wind7.9 mph SW

Humidity85%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

Tue, 1390° / 66°

90 °

Altamont, Tuesday, 13 October

Clear. High 90°, low 66°.

Pressure29.91 inHg

Wind8.9 mph SW

Humidity50%

Visibility6.2 mi

Dew point64°

Wed, 1478° / 70°

0.41

78 °

Altamont, Wednesday, 14 October

Rain. High 78°, low 70°.

Pressure30.03 inHg

Wind3.5 mph W

Humidity92%

Visibility1.8 mi

Dew point72°

Thu, 1579° / 66°

0.61

79 °

Altamont, Thursday, 15 October

Rain. High 79°, low 66°.

Pressure30.06 inHg

Wind7.8 mph S

Humidity80%

Visibility6.2 mi

Dew point70°

Fri, 1664° / 52°

0.02

64 °

Altamont, Friday, 16 October

Light rain. High 64°, low 52°.

Pressure30.36 inHg

Wind16.6 mph N

Humidity44%

Visibility—

Dew point38°

Sat, 1761° / 43°

61 °

Altamont, Saturday, 17 October

Clear. High 61°, low 43°.

Pressure30.45 inHg

Wind7.1 mph NE

Humidity47%

Visibility—

Dew point37°

Sun, 1865° / 37°

65 °

Altamont, Sunday, 18 October

Clear. High 65°, low 37°.

Pressure30.33 inHg

Wind9.3 mph S

Humidity25%

Visibility—

Dew point22°

Mon, 1973° / 48°

73 °

Altamont, Monday, 19 October

Mostly clear. High 73°, low 48°.

Pressure30.27 inHg

Wind12.8 mph S

Humidity52%

Visibility—

Dew point50°

Tue, 2066° / 58°

0.11

66 °

Altamont, Tuesday, 20 October

Light rain. High 66°, low 58°.

Pressure30.30 inHg

Wind9.9 mph S

Humidity78%

Visibility—

Dew point56°

Wed, 2175° / 56°

75 °

Altamont, Wednesday, 21 October

Clear. High 75°, low 56°.

Pressure30.27 inHg

Wind9.2 mph E

Humidity54%

Visibility—

Dew point54°

Thu, 2277° / 56°

77 °

Altamont, Thursday, 22 October

Partly cloudy. High 77°, low 56°.

Pressure30.27 inHg

Wind8.1 mph SE

Humidity41%

Visibility—

Dew point48°

Fri, 2369° / 58°

0.02

69 °

Altamont, Friday, 23 October

Light rain. High 69°, low 58°.

Pressure30.24 inHg

Wind12.3 mph SW

Humidity66%

Visibility—

Dew point55°

Sat, 2467° / 47°

67 °

Altamont, Saturday, 24 October

Partly cloudy. High 67°, low 47°.

Pressure30.33 inHg

Wind11.3 mph E

Humidity34%

Visibility—

Dew point34°

Sun, 2577° / 58°

77 °

Altamont, Sunday, 25 October

Overcast. High 77°, low 58°.

Pressure29.85 inHg

Wind22.7 mph W

Humidity54%

Visibility—

Dew point53°

Mon, 2660° / 52°

60 °

Altamont, Monday, 26 October

Light rain. High 60°, low 52°.

Pressure30.03 inHg

Wind15 mph W

Humidity72%

Visibility—

Dew point49°

Tue, 2766° / 45°

66 °

Altamont, Tuesday, 27 October

Partly cloudy. High 66°, low 45°.

Pressure30.09 inHg

Wind7 mph NE

Humidity44%

Visibility—

Dew point38°

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 Altamont, 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 Altamont, 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.