Olson, IL 14 Day Weather
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Olson, IL Weather Forecast


Olson, IL Weather Forecast Dated: 1248 AM Wed Sep 09 2026
Expect a mild stretch with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.
Wednesday, September 9, 2026
Mid-Morning
67°F 19°C
Light Fog
Mid-Afternoon
78°F 26°C
Scattered Showers
Early-Evening
76°F 24°C
Overcast
Pleasant near 78°F 26°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the SSW to the NW at 5 mph 8 km/h.
Thursday, September 10, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
68°F 20°C
Sunny
Comfortable with temperatures reaching 74°F 23°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
72°F 23°C
Heavy Rain Showers
Enjoyable around 79°F 26°C, dry most of the day, with showers developing late, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds switching from the S to the SE at 7 mph 11 km/h.
Saturday, September 12, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
73°F 23°C
Overcast
Early-Evening
75°F 24°C
Scattered Showers
Mild temperatures up to 73°F 23°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds decreasing from NNW 12 mph 20 km/h to S 3 mph 4 km/h.
Sunday, September 13, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
78°F 26°C
Overcast
Early-Evening
77°F 25°C
Overcast
Mild with a high of 78°F 26°C, overcast throughout the day, with steady humidity and steady pressure. Winds swinging from the S to the SSW at 5 mph 8 km/h.
Monday, September 14, 2026
Mid-Morning
71°F 22°C
Light Showers
Mid-Afternoon
84°F 29°C
Scattered Showers
Early-Evening
79°F 26°C
Sunny
Very warm near 84°F 29°C, though humidity makes it feel like 88°F 31°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds shifting from the S to the SSE at 4 mph 7 km/h.
Tuesday, September 15, 2026
Mid-Morning
63°F 17°C
Scattered Showers
Mid-Afternoon
67°F 20°C
Partly Cloudy
Early-Evening
64°F 18°C
Sunny
Comfortable at 67°F 20°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure rising. Winds turning from the NW to the ESE at 7 mph 11 km/h.
Wednesday, September 16, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
70°F 21°C
Overcast
Early-Evening
65°F 18°C
Overcast
Enjoyable around 70°F 21°C, overcast throughout the day, with steady humidity and steady pressure. Winds switching from the E to the ESE at 11 mph 17 km/h.
Thursday, September 17, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
87°F 30°C
Partly Cloudy
Early-Evening
83°F 29°C
Sunny
Very warm near 87°F 30°C, though humidity makes it feel like 93°F 34°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds blowing from the SSW at 15 mph 23 km/h. Gusts up to 26 mph 41 km/h.
Friday, September 18, 2026
Mid-Morning
73°F 23°C
Scattered Showers
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
58°F 15°C
Light Showers
Mildly cool near 63°F 17°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds swinging from the NW to the WSW at 13 mph 20 km/h. Gusts up to 32 mph 51 km/h.
Saturday, September 19, 2026
Mid-Morning
47°F 9°C
Overcast
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
50°F 10°C
Overcast
Chilly near 55°F 13°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds shifting from the ESE to the NE at 8 mph 13 km/h.
Sunday, September 20, 2026
Mid-Morning
48°F 9°C
Cloudy
Mid-Afternoon
58°F 15°C
Sunny
Early-Evening
54°F 12°C
Sunny
Cool with a high near 58°F 15°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling.
Monday, September 21, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
59°F 15°C
Sunny
Refreshing around 64°F 18°C, sunny throughout the day, with steady humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
56°F 14°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
33°F 10°C
Sunny
Mild temperatures up to 69°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the S to the at 4 mph 6 km/h.
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