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Simpson IL Weather - Clear - 80°F
Clear
80°F
Updated 9:52 pm
Feels Like 92°F
Humidity 74%
Wind E 1 mph
Barometer  29.97 in
Dew Point 71°F
Simpson IL Weather - Clear - 27°C
Clear
27°C
Updated 9:52 pm
Feels Like 33°C
Humidity 74%
Wind E 2 km/h
Barometer  101.5 kPa
Dew Point 22°C
Simpson, IL Weather and Current Conditionssimpson il weather forecast

Simpson, IL Weather Forecast

Simpson Illinois WeatherSimpson, Illinois Weather Weather Forecast
14 day API forecast for Simpson, Illinois. Note. The 7-day weather forecast for Simpson, IL is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Simpson, IL Weather Forecast Dated: 952 PM Thu Sep 03 2026
Expect a hot stretch with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Thursday, September 3, 2026

Mid-Morning
Simpson Weather - 2026-09-03 - Morning - Sunny
82°F 28°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-03 - Afternoon - Sunny
98°F 37°C
Sunny
Early-Evening
Simpson Weather - 2026-09-03 - Evening - Sunny
90°F 32°C
Sunny
Sizzling hot near 98°F 37°C with a heat index reaching 111°F 44°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the SSW to the SSE at 9 mph 14 km/h.

Friday, September 4, 2026

Mid-Morning
Simpson Weather - 2026-09-04 - Morning - Sunny
88°F 31°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-04 - Afternoon - Cloudy
96°F 35°C
Cloudy
Early-Evening
Simpson Weather - 2026-09-04 - Evening - Sunny
92°F 33°C
Sunny
Hot and sweltering around 96°F 35°C (heat index 99°F 37°C), sunny in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds switching from the SW to the S at 9 mph 14 km/h.

Saturday, September 5, 2026

Mid-Morning
Simpson Weather - 2026-09-05 - Morning - Sunny
87°F 31°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-05 - Afternoon - Overcast
102°F 39°C
Overcast
Early-Evening
Simpson Weather - 2026-09-05 - Evening - Scattered Showers
87°F 30°C
Scattered Showers
Dangerously hot temperatures around 102°F 39°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the WSW to the W at 8 mph 13 km/h.

Sunday, September 6, 2026

Mid-Morning
Simpson Weather - 2026-09-06 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-06 - Afternoon - Sunny
100°F 38°C
Sunny
Early-Evening
Simpson Weather - 2026-09-06 - Evening - Cloudy
90°F 32°C
Cloudy
Dangerously hot with a high of 100°F 38°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds out of the NNE at 10 mph 15 km/h.

Monday, September 7, 2026

Mid-Morning
Simpson Weather - 2026-09-07 - Morning - Cloudy
73°F 23°C
Cloudy
Mid-Afternoon
Simpson Weather - 2026-09-07 - Afternoon - Sunny
93°F 34°C
Sunny
Early-Evening
Simpson Weather - 2026-09-07 - Evening - Sunny
84°F 29°C
Sunny
Very hot with a high of 93°F 34°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds blowing from the ENE at 8 mph 13 km/h.

Tuesday, September 8, 2026

Mid-Morning
Simpson Weather - 2026-09-08 - Morning - Partly Cloudy
79°F 26°C
Partly Cloudy
Mid-Afternoon
Simpson Weather - 2026-09-08 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Simpson Weather - 2026-09-08 - Evening - Sunny
89°F 31°C
Sunny
Very hot with temperatures reaching 96°F 36°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the S to the SSE at 9 mph 15 km/h. Gusts up to 20 mph 32 km/h.

Wednesday, September 9, 2026

Mid-Morning
Simpson Weather - 2026-09-09 - Morning - Sunny
85°F 30°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-09 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Simpson Weather - 2026-09-09 - Evening - Partly Cloudy
96°F 36°C
Partly Cloudy
Dangerously hot temperatures around 104°F 40°C, partly cloudy through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the SSW to the S at 9 mph 13 km/h.

Thursday, September 10, 2026

Mid-Morning
Simpson Weather - 2026-09-10 - Morning - Sunny
91°F 33°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-10 - Afternoon - Sunny
108°F 42°C
Sunny
Early-Evening
Simpson Weather - 2026-09-10 - Evening - Partly Cloudy
99°F 38°C
Partly Cloudy
Dangerously hot with a high of 108°F 42°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds moving from the WSW to the SSW at 9 mph 15 km/h.

Friday, September 11, 2026

Mid-Morning
Simpson Weather - 2026-09-11 - Morning - Sunny
93°F 34°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-11 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Simpson Weather - 2026-09-11 - Evening - Overcast
94°F 35°C
Overcast
Scorching hot near 104°F 40°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the W to the ESE at 6 mph 10 km/h.

Saturday, September 12, 2026

Mid-Morning
Simpson Weather - 2026-09-12 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-12 - Afternoon - Partly Cloudy
103°F 39°C
Partly Cloudy
Early-Evening
Simpson Weather - 2026-09-12 - Evening - Partly Cloudy
93°F 34°C
Partly Cloudy
Sweltering heat reaching 103°F 39°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.

Sunday, September 13, 2026

Mid-Morning
Simpson Weather - 2026-09-13 - Morning - Sunny
88°F 31°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-13 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Simpson Weather - 2026-09-13 - Evening - Sunny
93°F 34°C
Sunny
Dangerously hot temperatures around 104°F 40°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds shifting from the SSE to the ESE at 8 mph 12 km/h.

Monday, September 14, 2026

Mid-Morning
Simpson Weather - 2026-09-14 - Morning - Light Showers
83°F 28°C
Light Showers
Mid-Afternoon
Simpson Weather - 2026-09-14 - Afternoon - Scattered Showers
102°F 39°C
Scattered Showers
Early-Evening
Simpson Weather - 2026-09-14 - Evening - Overcast
83°F 28°C
Overcast
Dangerously hot with a high of 102°F 39°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the SSW to the SE at 7 mph 11 km/h.

Tuesday, September 15, 2026

Mid-Morning
Simpson Weather - 2026-09-15 - Morning - Sunny
83°F 29°C
Sunny
Mid-Afternoon
Simpson Weather - 2026-09-15 - Afternoon - Sunny
105°F 40°C
Sunny
Early-Evening
Simpson Weather - 2026-09-15 - Evening - Cloudy
91°F 33°C
Cloudy
Scorching hot near 105°F 40°C, sunny in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds switching from the SSW to the N at 5 mph 8 km/h.

Wednesday, September 16, 2026

Mid-Morning
Simpson Weather - 2026-09-16 - Morning - Overcast
84°F 29°C
Overcast
Mid-Afternoon
Simpson Weather - 2026-09-16 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Simpson Weather - 2026-09-16 - Evening - Sunny
94°F 35°C
Sunny
Sweltering heat reaching 104°F 40°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.

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Weather by the Numbers

Thu, 3rd
Simpson IL Weather - Thursday, Sep 3, 2026 - Sunny
Hi: 98°F 37°C
Lo: 73°F 23°C
Sunrise 06:28 AM
Sunset 07:22 PM
Wind SW 9 mph14 km/h
Dew Point 80°F27°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 3% *
Humidity 59%
Fri, 4th
Simpson IL Weather - Friday, Sep 4, 2026 - Cloudy
Hi: 99°F 37°C
Lo: 79°F 26°C
Sunrise 06:28 AM
Sunset 07:20 PM
Wind SW 6 mph9 km/h
Dew Point 63°F17°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 7% *
Humidity 31%
Sat, 5th
Simpson IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 103°F 39°C
Lo: 77°F 25°C
Sunrise 06:29 AM
Sunset 07:19 PM
Wind W 6 mph10 km/h
Dew Point 61°F16°C
uv Index 8
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 28%
Sun, 6th
Simpson IL Weather - Sunday, Sep 6, 2026 - Partly Cloudy
Hi: 100°F 38°C
Lo: 74°F 23°C
Sunrise 06:30 AM
Sunset 07:17 PM
Wind NNE 9 mph15 km/h
Dew Point 58°F14°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 3% *
Humidity 30%
Mon, 7th
Simpson IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 93°F 34°C
Lo: 65°F 18°C
Sunrise 06:31 AM
Sunset 07:16 PM
Wind ENE 7 mph11 km/h
Dew Point 53°F12°C
uv Index 8
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 32%
Tue, 8th
Simpson IL Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 97°F 36°C
Lo: 69°F 21°C
Sunrise 06:32 AM
Sunset 07:14 PM
Wind S 7 mph11 km/h
Dew Point 59°F15°C
uv Index 8
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 33%
Wed, 9th
Simpson IL Weather - Wednesday, Sep 9, 2026 - Partly Cloudy
Hi: 106°F 41°C
Lo: 76°F 25°C
Sunrise 06:32 AM
Sunset 07:13 PM
Wind SW 10 mph16 km/h
Dew Point 61°F16°C
uv Index 9
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 30%
Thu, 10th
Simpson IL Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 108°F 42°C
Lo: 80°F 27°C
Sunrise 06:33 AM
Sunset 07:11 PM
Wind WSW 11 mph18 km/h
Dew Point 57°F14°C
uv Index 10
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 22%
Fri, 11th
Simpson IL Weather - Friday, Sep 11, 2026 - Sunny
Hi: 108°F 42°C
Lo: 82°F 28°C
Sunrise 06:34 AM
Sunset 07:09 PM
Wind NW 9 mph14 km/h
Dew Point 56°F13°C
uv Index 10
Barometric Pressure 29.85 in1011 mb
POP 0% *
Humidity 21%
Sat, 12th
Simpson IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 104°F 40°C
Lo: 75°F 24°C
Sunrise 06:35 AM
Sunset 07:08 PM
Wind S 6 mph9 km/h
Dew Point 60°F16°C
uv Index 9
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 30%
Sun, 13th
Simpson IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 104°F 40°C
Lo: 78°F 26°C
Sunrise 06:36 AM
Sunset 07:06 PM
Wind S 6 mph10 km/h
Dew Point 61°F16°C
uv Index 9
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 29%
Mon, 14th
Simpson IL Weather - Monday, Sep 14, 2026 - Overcast
Hi: 103°F 39°C
Lo: 75°F 24°C
Sunrise 06:37 AM
Sunset 07:05 PM
Wind SW 10 mph17 km/h
Dew Point 61°F16°C
uv Index 8
Barometric Pressure 30.06 in1018 mb
POP 9% *
Humidity 33%
Tue, 15th
Simpson IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 105°F 41°C
Lo: 73°F 23°C
Sunrise 06:37 AM
Sunset 07:03 PM
Wind SW 11 mph18 km/h
Dew Point 59°F15°C
uv Index 9
Barometric Pressure 29.94 in1014 mb
POP 0% *
Humidity 29%
Wed, 16th
Simpson IL Weather - Wednesday, Sep 16, 2026 - Partly Cloudy
Hi: 105°F 40°C
Lo: 75°F 24°C
Sunrise 06:38 AM
Sunset 07:02 PM
Wind NE 4 mph7 km/h
Dew Point 59°F15°C
uv Index 9
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 28%
* POP = Probability of Precipitation. Data for 12:00 PM.