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Geff, IL Weather Forecast


Geff, IL Weather Forecast Dated: 836 AM Wed Sep 02 2026 (Geff Time)
Expect a hot stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Wednesday, September 2, 2026
Mid-Morning
86°F 30°C
Sunny
Mid-Afternoon
102°F 39°C
Partly Cloudy
Early-Evening
94°F 35°C
Overcast
Scorching hot near 102°F 39°C, sunny in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds turning from the WSW to the SSE at 10 mph 16 km/h.
Thursday, September 3, 2026
Mid-Morning
88°F 31°C
Sunny
Mid-Afternoon
102°F 39°C
Partly Cloudy
Early-Evening
94°F 35°C
Sunny
Sweltering heat reaching 102°F 39°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the WSW to the SSE at 6 mph 9 km/h.
Friday, September 4, 2026
Mid-Morning
89°F 32°C
Sunny
Mid-Afternoon
102°F 39°C
Partly Cloudy
Early-Evening
95°F 35°C
Partly Cloudy
Dangerously hot temperatures around 102°F 39°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the W to the SSW at 9 mph 14 km/h.
Saturday, September 5, 2026
Mid-Morning
88°F 31°C
Overcast
Mid-Afternoon
103°F 39°C
Scattered Showers
Early-Evening
85°F 30°C
Scattered Showers
Dangerously hot with a high of 103°F 39°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure.
Sunday, September 6, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
94°F 34°C
Nearby Thunderstorms
Early-Evening
85°F 30°C
Nearby Thunderstorms
Hot and sweltering around 94°F 34°C (heat index 98°F 36°C), locally heavy thunderstorms at times, with lower humidity and steady pressure.
Monday, September 7, 2026
Mid-Morning
79°F 26°C
Scattered Showers
Mid-Afternoon
97°F 36°C
Overcast
Early-Evening
88°F 32°C
Partly Cloudy
Very hot with a high of 97°F 36°C, feeling closer to 100°F 38°C in the humidity, locally heavy downpours at times, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the E at 5 mph 8 km/h.
Tuesday, September 8, 2026
Mid-Morning
83°F 28°C
Light Showers
Mid-Afternoon
95°F 35°C
Cloudy
Early-Evening
81°F 27°C
Overcast
Sizzling hot near 95°F 35°C with a heat index reaching 100°F 38°C, early showers breaking for a drier afternoon, with steady humidity and steady pressure. Winds shifting from the SW to the NNE at 15 mph 25 km/h. Gusts up to 22 mph 35 km/h.
Wednesday, September 9, 2026
Mid-Morning
71°F 22°C
Partly Cloudy
Mid-Afternoon
93°F 34°C
Overcast
Early-Evening
90°F 33°C
Cloudy
Hot and sweltering around 93°F 34°C (heat index 97°F 36°C), partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the E to the SE at 10 mph 16 km/h.
Thursday, September 10, 2026
Mid-Morning
94°F 34°C
Sunny
Mid-Afternoon
107°F 42°C
Sunny
Early-Evening
101°F 38°C
Sunny
Scorching hot near 107°F 42°C, sunny throughout the day, with lower humidity and steady pressure. Winds out of the SW at 21 mph 33 km/h. Gusts up to 30 mph 48 km/h.
Friday, September 11, 2026
Mid-Morning
85°F 30°C
Light Showers
Mid-Afternoon
98°F 37°C
Cloudy
Early-Evening
85°F 29°C
Overcast
Sizzling hot near 98°F 37°C with a heat index reaching 101°F 39°C, early showers breaking for a drier afternoon, with steady humidity and steady pressure. Winds moving from the WSW to the NE at 12 mph 20 km/h. Gusts up to 21 mph 33 km/h.
Saturday, September 12, 2026
Mid-Morning
72°F 22°C
Heavy Rain Showers
Mid-Afternoon
91°F 33°C
Sunny
Early-Evening
80°F 27°C
Sunny
Hot and sweltering around 91°F 33°C (heat index 95°F 35°C), scattered morning showers before drying out later, with lower humidity and steady pressure. Winds swinging from the NE to the ENE at 11 mph 18 km/h. Gusts up to 23 mph 36 km/h.
Sunday, September 13, 2026
Mid-Morning
82°F 28°C
Light Fog
Mid-Afternoon
100°F 38°C
Sunny
Early-Evening
87°F 31°C
Sunny
Dangerously hot with a high of 100°F 38°C (heat index near 103°F 40°C), sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds out of the WNW at 6 mph 9 km/h.
Monday, September 14, 2026
Mid-Morning
90°F 32°C
Cloudy
Mid-Afternoon
105°F 40°C
Sunny
Early-Evening
95°F 35°C
Sunny
Scorching hot near 105°F 40°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds blowing from the W at 12 mph 19 km/h.
Tuesday, September 15, 2026
Mid-Morning
82°F 28°C
Sunny
Mid-Afternoon
99°F 37°C
Sunny
Early-Evening
91°F 33°C
Sunny
Hot and sweltering around 99°F 37°C (heat index 104°F 40°C), sunny throughout the day, with lower humidity and barometric pressure falling. Winds switching from the NE to the E at 8 mph 14 km/h.
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