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Thayer IL Weather - Clear - 95°F
Clear
95°F
Updated 6:10 pm
Feels Like 97°F
Humidity 47%
Wind NNW 5 mph
Barometer  29.9 in
Dew Point 72°F
Thayer IL Weather - Clear - 35°C
Clear
35°C
Updated 6:10 pm
Feels Like 36°C
Humidity 47%
Wind NNW 8 km/h
Barometer  101.3 kPa
Dew Point 22°C
Thayer, IL Weather and Current Conditionsthayer il weather forecast

Thayer, IL Weather Forecast

Thayer Illinois WeatherThayer, Illinois Weather Weather Forecast
14 day API Thayer, IL weather forecast. Note. Our 7-day weather forecast for Thayer, Illinois is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Thayer, IL Weather Forecast Dated: 610 PM Fri Sep 04 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.

Friday, September 4, 2026

Mid-Morning
Thayer Weather - 2026-09-04 - Morning - Sunny
85°F 30°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-04 - Afternoon - Sunny
101°F 38°C
Sunny
Early-Evening
Thayer Weather - 2026-09-04 - Evening - Sunny
92°F 34°C
Sunny
Scorching heat reaching 101°F 38°C, feeling like 111°F 44°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SW to the SSW at 11 mph 18 km/h. Gusts up to 21 mph 34 km/h.

Saturday, September 5, 2026

Mid-Morning
Thayer Weather - 2026-09-05 - Morning - Sunny
86°F 30°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-05 - Afternoon - Overcast
102°F 39°C
Overcast
Early-Evening
Thayer Weather - 2026-09-05 - Evening - Light Showers
86°F 30°C
Light Showers
Sweltering heat reaching 102°F 39°C, mainly dry until evening showers arrive, with increasing humidity and steady pressure. Winds switching from the NW to the SSW at 4 mph 6 km/h.

Sunday, September 6, 2026

Mid-Morning
Thayer Weather - 2026-09-06 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-06 - Afternoon - Cloudy
91°F 33°C
Cloudy
Early-Evening
Thayer Weather - 2026-09-06 - Evening - Overcast
79°F 26°C
Overcast
Sizzling hot with 91°F 33°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds ENE at 12 mph 19 km/h. Gusts up to 25 mph 40 km/h.

Monday, September 7, 2026

Mid-Morning
Thayer Weather - 2026-09-07 - Morning - Sunny
69°F 21°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-07 - Afternoon - Sunny
89°F 32°C
Sunny
Early-Evening
Thayer Weather - 2026-09-07 - Evening - Cloudy
80°F 27°C
Cloudy
Warm temperatures up to 89°F 32°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds swinging from the ESE to the E at 10 mph 15 km/h.

Tuesday, September 8, 2026

Mid-Morning
Thayer Weather - 2026-09-08 - Morning - Sunny
74°F 24°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-08 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Thayer Weather - 2026-09-08 - Evening - Sunny
91°F 33°C
Sunny
Very hot with a high of 97°F 36°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds shifting from the S to the SSE at 11 mph 18 km/h. Gusts up to 20 mph 33 km/h.

Wednesday, September 9, 2026

Mid-Morning
Thayer Weather - 2026-09-09 - Morning - Scattered Showers
85°F 29°C
Scattered Showers
Mid-Afternoon
Thayer Weather - 2026-09-09 - Afternoon - Sunny
94°F 34°C
Sunny
Early-Evening
Thayer Weather - 2026-09-09 - Evening - Partly Cloudy
84°F 29°C
Partly Cloudy
Very hot with temperatures reaching 94°F 34°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds turning from the WSW to the N at 10 mph 17 km/h.

Thursday, September 10, 2026

Mid-Morning
Thayer Weather - 2026-09-10 - Morning - Cloudy
71°F 21°C
Cloudy
Mid-Afternoon
Thayer Weather - 2026-09-10 - Afternoon - Overcast
85°F 30°C
Overcast
Early-Evening
Thayer Weather - 2026-09-10 - Evening - Overcast
77°F 25°C
Overcast
Balmy with temperatures reaching 85°F 30°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds switching from the N to the NE at 9 mph 14 km/h.

Friday, September 11, 2026

Mid-Morning
Thayer Weather - 2026-09-11 - Morning - Overcast
62°F 16°C
Overcast
Mid-Afternoon
Thayer Weather - 2026-09-11 - Afternoon - Overcast
75°F 24°C
Overcast
Early-Evening
Thayer Weather - 2026-09-11 - Evening - Cloudy
72°F 23°C
Cloudy
Enjoyable around 75°F 24°C, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the ESE to the SE at 10 mph 17 km/h.

Saturday, September 12, 2026

Mid-Morning
Thayer Weather - 2026-09-12 - Morning - Light Showers
63°F 17°C
Light Showers
Mid-Afternoon
Thayer Weather - 2026-09-12 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Thayer Weather - 2026-09-12 - Evening - Overcast
81°F 27°C
Overcast
Mild temperatures up to 79°F 26°C, morning showers, giving way to clearing skies, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the S at 14 mph 22 km/h. Gusts up to 26 mph 42 km/h.

Sunday, September 13, 2026

Mid-Morning
Thayer Weather - 2026-09-13 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-13 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Thayer Weather - 2026-09-13 - Evening - Sunny
98°F 37°C
Sunny
Sweltering heat reaching 104°F 40°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the SW to the SSW at 14 mph 22 km/h. Gusts up to 28 mph 45 km/h.

Monday, September 14, 2026

Mid-Morning
Thayer Weather - 2026-09-14 - Morning - Sunny
91°F 33°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-14 - Afternoon - Sunny
106°F 41°C
Sunny
Early-Evening
Thayer Weather - 2026-09-14 - Evening - Sunny
98°F 37°C
Sunny
Dangerously hot temperatures around 106°F 41°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the WSW to the SSW at 12 mph 19 km/h. Gusts up to 24 mph 38 km/h.

Tuesday, September 15, 2026

Mid-Morning
Thayer Weather - 2026-09-15 - Morning - Sunny
90°F 32°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-15 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Thayer Weather - 2026-09-15 - Evening - Sunny
96°F 36°C
Sunny
Dangerously hot with a high of 104°F 40°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the WSW to the SSW at 12 mph 18 km/h. Gusts up to 22 mph 35 km/h.

Wednesday, September 16, 2026

Mid-Morning
Thayer Weather - 2026-09-16 - Morning - Sunny
90°F 32°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-16 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Thayer Weather - 2026-09-16 - Evening - Sunny
97°F 36°C
Sunny
Scorching hot near 104°F 40°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the WSW to the SW at 8 mph 12 km/h.

Thursday, September 17, 2026

Mid-Morning
Thayer Weather - 2026-09-17 - Morning - Sunny
91°F 33°C
Sunny
Mid-Afternoon
Thayer Weather - 2026-09-17 - Afternoon - Sunny
105°F 41°C
Sunny
Early-Evening
Thayer Weather - 2026-09-17 - Evening - Sunny
93°F 34°C
Sunny
Sweltering heat reaching 105°F 41°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds swinging from the SSW to the SE at 9 mph 14 km/h.

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Weather by the Numbers

Fri, 4th
Thayer IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 101°F 39°C
Lo: 75°F 24°C
Sunrise 06:30 AM
Sunset 07:25 PM
Wind WSW 8 mph13 km/h
Dew Point 75°F24°C
uv Index 8
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 46%
Sat, 5th
Thayer IL Weather - Saturday, Sep 5, 2026 - Cloudy
Hi: 104°F 40°C
Lo: 77°F 25°C
Sunrise 06:31 AM
Sunset 07:24 PM
Wind NW 4 mph6 km/h
Dew Point 61°F16°C
uv Index 8
Barometric Pressure 29.85 in1011 mb
POP 5% *
Humidity 28%
Sun, 6th
Thayer IL Weather - Sunday, Sep 6, 2026 - Cloudy
Hi: 91°F 33°C
Lo: 68°F 20°C
Sunrise 06:32 AM
Sunset 07:22 PM
Wind E 11 mph17 km/h
Dew Point 58°F14°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 5% *
Humidity 38%
Mon, 7th
Thayer IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 90°F 32°C
Lo: 62°F 16°C
Sunrise 06:33 AM
Sunset 07:21 PM
Wind ESE 9 mph14 km/h
Dew Point 48°F9°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 0% *
Humidity 30%
Tue, 8th
Thayer IL Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 97°F 36°C
Lo: 64°F 18°C
Sunrise 06:34 AM
Sunset 07:19 PM
Wind S 10 mph17 km/h
Dew Point 49°F9°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 24%
Wed, 9th
Thayer IL Weather - Wednesday, Sep 9, 2026 - Patchy Rain Nearby
Hi: 94°F 35°C
Lo: 73°F 23°C
Sunrise 06:35 AM
Sunset 07:17 PM
Wind NW 13 mph22 km/h
Dew Point 57°F14°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 2% *
Humidity 31%
Thu, 10th
Thayer IL Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 86°F 30°C
Lo: 63°F 17°C
Sunrise 06:36 AM
Sunset 07:16 PM
Wind SW 9 mph15 km/h
Dew Point 44°F7°C
uv Index 7
Barometric Pressure 30.15 in1021 mb
POP 5% *
Humidity 28%
Fri, 11th
Thayer IL Weather - Friday, Sep 11, 2026 - Overcast
Hi: 77°F 25°C
Lo: 60°F 16°C
Sunrise 06:37 AM
Sunset 07:14 PM
Wind SE 9 mph14 km/h
Dew Point 50°F10°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 13% *
Humidity 55%
Sat, 12th
Thayer IL Weather - Saturday, Sep 12, 2026 - Light Rain Shower
Hi: 82°F 28°C
Lo: 62°F 17°C
Sunrise 06:37 AM
Sunset 07:12 PM
Wind SSE 12 mph19 km/h
Dew Point 58°F15°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 39% *
Humidity 69%
Sun, 13th
Thayer IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 105°F 41°C
Lo: 76°F 25°C
Sunrise 06:38 AM
Sunset 07:11 PM
Wind WSW 17 mph27 km/h
Dew Point 59°F15°C
uv Index 9
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 29%
Mon, 14th
Thayer IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 106°F 41°C
Lo: 82°F 28°C
Sunrise 06:39 AM
Sunset 07:09 PM
Wind WSW 13 mph20 km/h
Dew Point 57°F14°C
uv Index 9
Barometric Pressure 29.97 in1015 mb
POP 0% *
Humidity 24%
Tue, 15th
Thayer IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 105°F 40°C
Lo: 82°F 28°C
Sunrise 06:40 AM
Sunset 07:08 PM
Wind WSW 14 mph23 km/h
Dew Point 56°F13°C
uv Index 9
Barometric Pressure 30 in1016 mb
POP 0% *
Humidity 23%
Wed, 16th
Thayer IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 105°F 40°C
Lo: 81°F 27°C
Sunrise 06:41 AM
Sunset 07:06 PM
Wind SW 10 mph17 km/h
Dew Point 57°F14°C
uv Index 9
Barometric Pressure 30.06 in1018 mb
POP 0% *
Humidity 25%
Thu, 17th
Thayer IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 105°F 41°C
Lo: 81°F 27°C
Sunrise 06:42 AM
Sunset 07:04 PM
Wind SSW 8 mph13 km/h
Dew Point 57°F14°C
uv Index 9
Barometric Pressure 30.09 in1019 mb
POP 0% *
Humidity 24%
* POP = Probability of Precipitation. Data for 12:00 PM.