As of 16:11 CDT

Weather in Simpson, IL

86°

Simpson, Wednesday, 7 October, 16:11

Clear. Feels like 84°. High 86°, low 51°.

Pressure29.91 inHg

Wind7.8 mph SW

Humidity36%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

Thu, 0883° / 56°

83 °

Simpson, Thursday, 8 October

Clear. High 83°, low 56°.

Pressure30.09 inHg

Wind6.8 mph E

Humidity31%

Visibility6.2 mi

Dew point45°

Fri, 0983° / 53°

83 °

Simpson, Friday, 9 October

Clear. High 83°, low 53°.

Pressure30.15 inHg

Wind7.8 mph SE

Humidity34%

Visibility6.2 mi

Dew point49°

Sat, 1080° / 61°

0.19

80 °

Simpson, Saturday, 10 October

Rain. High 80°, low 61°.

Pressure30.15 inHg

Wind5.3 mph SE

Humidity38%

Visibility6.2 mi

Dew point49°

Sun, 1171° / 62°

0.52

71 °

Simpson, Sunday, 11 October

Rain. High 71°, low 62°.

Pressure29.85 inHg

Wind4.4 mph SE

Humidity92%

Visibility5.9 mi

Dew point63°

Mon, 1281° / 58°

81 °

Simpson, Monday, 12 October

Clear. High 81°, low 58°.

Pressure29.94 inHg

Wind7.7 mph SW

Humidity60%

Visibility—

Dew point61°

Tue, 1390° / 65°

90 °

Simpson, Tuesday, 13 October

Clear. High 90°, low 65°.

Pressure29.91 inHg

Wind9.8 mph W

Humidity42%

Visibility—

Dew point59°

Wed, 1489° / 62°

89 °

Simpson, Wednesday, 14 October

Clear. High 89°, low 62°.

Pressure29.94 inHg

Wind9.3 mph SE

Humidity44%

Visibility—

Dew point58°

Thu, 1593° / 72°

93 °

Simpson, Thursday, 15 October

Clear. High 93°, low 72°.

Pressure29.91 inHg

Wind16.5 mph SW

Humidity38%

Visibility—

Dew point60°

Fri, 1678° / 61°

0.09

78 °

Simpson, Friday, 16 October

Light rain. High 78°, low 61°.

Pressure30.21 inHg

Wind11.6 mph N

Humidity40%

Visibility—

Dew point49°

Sat, 1762° / 49°

62 °

Simpson, Saturday, 17 October

Overcast. High 62°, low 49°.

Pressure30.30 inHg

Wind12.4 mph N

Humidity36%

Visibility—

Dew point34°

Sun, 1863° / 41°

63 °

Simpson, Sunday, 18 October

Overcast. High 63°, low 41°.

Pressure30.36 inHg

Wind8 mph NE

Humidity33%

Visibility—

Dew point30°

Mon, 1969° / 43°

69 °

Simpson, Monday, 19 October

Clear. High 69°, low 43°.

Pressure30.42 inHg

Wind10.6 mph E

Humidity27%

Visibility—

Dew point28°

Tue, 2073° / 49°

73 °

Simpson, Tuesday, 20 October

Overcast. High 73°, low 49°.

Pressure30.36 inHg

Wind11 mph S

Humidity35%

Visibility—

Dew point39°

Wed, 2159° / 53°

0.36

59 °

Simpson, Wednesday, 21 October

Rain. High 59°, low 53°.

Pressure30.18 inHg

Wind7.5 mph SW

Humidity83%

Visibility—

Dew point49°

Thu, 2256° / 52°

1.43

56 °

Simpson, Thursday, 22 October

Rain. High 56°, low 52°.

Pressure29.77 inHg

Wind8.9 mph N

Humidity96%

Visibility—

Dew point53°

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 Simpson, 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 Simpson, 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.