As of 10:06 CDT

Weather in Altamont, IL

69°

Altamont, Thursday, 15 October, 10:06

Rain. Feels like 70°. High 80°, low 66°.

Pressure30.03 inHg

Wind6.9 mph E

Humidity94%

Visibility6.2 mi

Dew point67°

See detailed hourly forecast

Fri, 1671° / 54°

0.16

71 °

Altamont, Friday, 16 October

Rain. High 71°, low 54°.

Pressure30.18 inHg

Wind18 mph NW

Humidity48%

Visibility6.2 mi

Dew point36°

Sat, 1758° / 42°

58 °

Altamont, Saturday, 17 October

Clear. High 58°, low 42°.

Pressure30.56 inHg

Wind3.6 mph NE

Humidity51%

Visibility6.2 mi

Dew point37°

Sun, 1863° / 42°

63 °

Altamont, Sunday, 18 October

Clear. High 63°, low 42°.

Pressure30.50 inHg

Wind7.8 mph S

Humidity37%

Visibility6.2 mi

Dew point33°

Mon, 1968° / 45°

68 °

Altamont, Monday, 19 October

Partly cloudy. High 68°, low 45°.

Pressure30.36 inHg

Wind6.6 mph S

Humidity43%

Visibility—

Dew point41°

Tue, 2071° / 47°

71 °

Altamont, Tuesday, 20 October

Mostly clear. High 71°, low 47°.

Pressure30.33 inHg

Wind4.5 mph S

Humidity41%

Visibility—

Dew point42°

Wed, 2174° / 53°

74 °

Altamont, Wednesday, 21 October

Partly cloudy. High 74°, low 53°.

Pressure30.30 inHg

Wind7.4 mph NE

Humidity37%

Visibility—

Dew point42°

Thu, 2275° / 53°

75 °

Altamont, Thursday, 22 October

Clear. High 75°, low 53°.

Pressure30.24 inHg

Wind7.2 mph SE

Humidity31%

Visibility—

Dew point38°

Fri, 2376° / 54°

76 °

Altamont, Friday, 23 October

Overcast. High 76°, low 54°.

Pressure30.21 inHg

Wind12 mph SE

Humidity30%

Visibility—

Dew point39°

Sat, 2473° / 54°

73 °

Altamont, Saturday, 24 October

Overcast. High 73°, low 54°.

Pressure30.18 inHg

Wind15.5 mph S

Humidity38%

Visibility—

Dew point44°

Sun, 2571° / 52°

71 °

Altamont, Sunday, 25 October

Clear. High 71°, low 52°.

Pressure30.45 inHg

Wind11.6 mph NE

Humidity51%

Visibility—

Dew point49°

Mon, 2673° / 50°

73 °

Altamont, Monday, 26 October

Overcast. High 73°, low 50°.

Pressure30.42 inHg

Wind9 mph NE

Humidity43%

Visibility—

Dew point46°

Tue, 2779° / 58°

79 °

Altamont, Tuesday, 27 October

Overcast. High 79°, low 58°.

Pressure30.18 inHg

Wind15.9 mph SW

Humidity30%

Visibility—

Dew point42°

Wed, 2875° / 61°

75 °

Altamont, Wednesday, 28 October

Overcast. High 75°, low 61°.

Pressure30.09 inHg

Wind17.8 mph SW

Humidity28%

Visibility—

Dew point38°

Thu, 2967° / 60°

0.48

67 °

Altamont, Thursday, 29 October

Rain. High 67°, low 60°.

Pressure30.03 inHg

Wind13.1 mph S

Humidity76%

Visibility—

Dew point56°

Fri, 3074° / 64°

0.28

74 °

Altamont, Friday, 30 October

Light rain. High 74°, low 64°.

Pressure29.83 inHg

Wind19.7 mph W

Humidity81%

Visibility—

Dew point64°

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.