As of 13:57 CDT

Weather in Teheran, IL

90°

Teheran, Monday, 12 October, 13:57

Clear. Feels like 92°. High 90°, low 63°.

Pressure29.83 inHg

Wind11.9 mph SW

Humidity45%

Visibility6.2 mi

Dew point66°

See detailed hourly forecast

Tue, 1387° / 67°

87 °

Teheran, Tuesday, 13 October

Clear. High 87°, low 67°.

Pressure29.88 inHg

Wind7.2 mph W

Humidity55%

Visibility6.2 mi

Dew point65°

Wed, 1475° / 66°

0.15

75 °

Teheran, Wednesday, 14 October

Rain. High 75°, low 66°.

Pressure30.06 inHg

Wind1.7 mph E

Humidity67%

Visibility6.2 mi

Dew point63°

Thu, 1569° / 62°

1.32

69 °

Teheran, Thursday, 15 October

Rain. High 69°, low 62°.

Pressure30.03 inHg

Wind3 mph E

Humidity96%

Visibility1.3 mi

Dew point66°

Fri, 1661° / 49°

0.01

61 °

Teheran, Friday, 16 October

Light rain. High 61°, low 49°.

Pressure30.39 inHg

Wind18.4 mph N

Humidity48%

Visibility6.2 mi

Dew point38°

Sat, 1762° / 42°

62 °

Teheran, Saturday, 17 October

Clear. High 62°, low 42°.

Pressure30.50 inHg

Wind5 mph N

Humidity38%

Visibility—

Dew point32°

Sun, 1866° / 42°

66 °

Teheran, Sunday, 18 October

Clear. High 66°, low 42°.

Pressure30.30 inHg

Wind13.8 mph S

Humidity26%

Visibility—

Dew point25°

Mon, 1964° / 51°

0.07

64 °

Teheran, Monday, 19 October

Light rain. High 64°, low 51°.

Pressure30.18 inHg

Wind12.5 mph S

Humidity47%

Visibility—

Dew point42°

Tue, 2076° / 54°

76 °

Teheran, Tuesday, 20 October

Clear. High 76°, low 54°.

Pressure30.18 inHg

Wind7 mph E

Humidity43%

Visibility—

Dew point46°

Wed, 2179° / 60°

79 °

Teheran, Wednesday, 21 October

Clear. High 79°, low 60°.

Pressure30.24 inHg

Wind10.8 mph SE

Humidity53%

Visibility—

Dew point57°

Thu, 2281° / 64°

81 °

Teheran, Thursday, 22 October

Overcast. High 81°, low 64°.

Pressure30.27 inHg

Wind15.2 mph S

Humidity44%

Visibility—

Dew point54°

Fri, 2378° / 69°

78 °

Teheran, Friday, 23 October

Light rain. High 78°, low 69°.

Pressure30.24 inHg

Wind14.2 mph S

Humidity50%

Visibility—

Dew point55°

Sat, 2480° / 65°

0.42

80 °

Teheran, Saturday, 24 October

Rain. High 80°, low 65°.

Pressure29.94 inHg

Wind21.1 mph S

Humidity49%

Visibility—

Dew point57°

Sun, 2567° / 53°

67 °

Teheran, Sunday, 25 October

Overcast. High 67°, low 53°.

Pressure30.03 inHg

Wind19 mph W

Humidity59%

Visibility—

Dew point44°

Mon, 2659° / 43°

59 °

Teheran, Monday, 26 October

Clear. High 59°, low 43°.

Pressure30.21 inHg

Wind14.6 mph NW

Humidity37%

Visibility—

Dew point29°

Tue, 2765° / 48°

65 °

Teheran, Tuesday, 27 October

Clear. High 65°, low 48°.

Pressure29.83 inHg

Wind18.7 mph N

Humidity50%

Visibility—

Dew point44°

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 Teheran, 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 Teheran, 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.