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As of 12:28 CDT

Weather in Simpson, IL

86°Current weather

Simpson, Saturday, 8 August, 12:28

Overcast. Feels like 96°. High 86°, low 72°.

Pressure30.09 inHg
Wind5.7 mph SW
Humidity73%
Visibility6.2 mi
Dew point73°
Sun, 0990° / 72°0Clear
90 °Clear

Simpson, Sunday, 9 August

Clear. High 90°, low 72°.

Pressure30.03 inHg
Wind11.5 mph S
Humidity55%
Visibility6.2 mi
Dew point69°
Mon, 1096° / 71°0Mostly clear
96 °Mostly clear

Simpson, Monday, 10 August

Mostly clear. High 96°, low 71°.

Pressure30.03 inHg
Wind12.3 mph SW
Humidity50%
Visibility6.2 mi
Dew point70°
Tue, 1197° / 75°0Mostly clear
97 °Mostly clear

Simpson, Tuesday, 11 August

Mostly clear. High 97°, low 75°.

Pressure29.97 inHg
Wind13.1 mph SW
Humidity44%
Visibility6.2 mi
Dew point69°
Wed, 1295° / 72°0.16Light rain
95 °Light rain

Simpson, Wednesday, 12 August

Light rain. High 95°, low 72°.

Pressure29.88 inHg
Wind17.5 mph SW
Humidity47%
Visibility6.2 mi
Dew point69°
Thu, 1383° / 71°0.17Light rain
83 °Light rain

Simpson, Thursday, 13 August

Light rain. High 83°, low 71°.

Pressure29.88 inHg
Wind12.4 mph S
Humidity70%
Visibility—
Dew point70°
Fri, 1481° / 62°0.01Light rain
81 °Light rain

Simpson, Friday, 14 August

Light rain. High 81°, low 62°.

Pressure30.12 inHg
Wind8.9 mph NE
Humidity41%
Visibility—
Dew point52°
Sat, 1580° / 61°0Light rain
80 °Light rain

Simpson, Saturday, 15 August

Light rain. High 80°, low 61°.

Pressure30.18 inHg
Wind7.3 mph S
Humidity49%
Visibility—
Dew point56°
Sun, 1681° / 69°2.58Heavy rain
81 °Heavy rain

Simpson, Sunday, 16 August

Heavy rain. High 81°, low 69°.

Pressure30.12 inHg
Wind10.4 mph SE
Humidity97%
Visibility—
Dew point71°
Mon, 1793° / 74°0.08Light rain
93 °Light rain

Simpson, Monday, 17 August

Light rain. High 93°, low 74°.

Pressure29.91 inHg
Wind11.9 mph S
Humidity49%
Visibility—
Dew point68°
Tue, 1887° / 70°0.7Heavy rain
87 °Heavy rain

Simpson, Tuesday, 18 August

Heavy rain. High 87°, low 70°.

Pressure29.94 inHg
Wind7.2 mph SW
Humidity63%
Visibility—
Dew point71°
Wed, 1992° / 69°1.91Heavy rain
92 °Heavy rain

Simpson, Wednesday, 19 August

Heavy rain. High 92°, low 69°.

Pressure29.94 inHg
Wind24.2 mph NW
Humidity55%
Visibility—
Dew point70°
Thu, 2075° / 61°0Partly cloudy
75 °Partly cloudy

Simpson, Thursday, 20 August

Partly cloudy. High 75°, low 61°.

Pressure30.12 inHg
Wind12.1 mph N
Humidity60%
Visibility—
Dew point58°
Fri, 2174° / 54°0Clear
74 °Clear

Simpson, Friday, 21 August

Clear. High 74°, low 54°.

Pressure30.21 inHg
Wind7.7 mph NE
Humidity46%
Visibility—
Dew point48°
Sat, 2276° / 54°0Clear
76 °Clear

Simpson, Saturday, 22 August

Clear. High 76°, low 54°.

Pressure30.15 inHg
Wind6.4 mph NE
Humidity45%
Visibility—
Dew point49°
Sun, 2379° / 56°0Clear
79 °Clear

Simpson, Sunday, 23 August

Clear. High 79°, low 56°.

Pressure30.12 inHg
Wind5.3 mph NE
Humidity42%
Visibility—
Dew point50°

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.