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Lostant IL Weather - Clear - 80°F
Clear
80°F
Updated 9:49 pm
Feels Like 88°F
Humidity 83%
Wind S 5 mph
Barometer  29.91 in
Dew Point 75°F
Lostant IL Weather - Clear - 27°C
Clear
27°C
Updated 9:49 pm
Feels Like 31°C
Humidity 83%
Wind S 8 km/h
Barometer  101.3 kPa
Dew Point 24°C
Lostant, IL Weather and Current Conditionslostant il weather forecast

Lostant, IL Weather Forecast

Lostant Illinois WeatherLostant, Illinois Weather Weather Forecast
14 day API Lostant, IL weather forecast. Note. Our 7-day weather forecast for Lostant, 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.
Lostant, IL Weather Forecast Dated: 949 PM Fri Sep 04 2026
Expect a very warm period with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 4, 2026

Mid-Morning
Lostant Weather - 2026-09-04 - Morning - Sunny
83°F 29°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-04 - Afternoon - Sunny
99°F 37°C
Sunny
Early-Evening
Lostant Weather - 2026-09-04 - Evening - Cloudy
88°F 31°C
Cloudy
Sizzling hot near 99°F 37°C with a heat index reaching 115°F 46°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the SW to the WSW at 4 mph 7 km/h.

Saturday, September 5, 2026

Mid-Morning
Lostant Weather - 2026-09-05 - Morning - Sunny
77°F 25°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-05 - Afternoon - Partly Cloudy
85°F 29°C
Partly Cloudy
Early-Evening
Lostant Weather - 2026-09-05 - Evening - Sunny
76°F 24°C
Sunny
Quite warm reaching 85°F 29°C, feeling like 91°F 33°C during peak afternoon, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds switching from the NNE to the NE at 11 mph 17 km/h.

Sunday, September 6, 2026

Mid-Morning
Lostant Weather - 2026-09-06 - Morning - Partly Cloudy
69°F 21°C
Partly Cloudy
Mid-Afternoon
Lostant Weather - 2026-09-06 - Afternoon - Overcast
77°F 25°C
Overcast
Early-Evening
Lostant Weather - 2026-09-06 - Evening - Overcast
70°F 21°C
Overcast
Enjoyable around 77°F 25°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds E at 9 mph 15 km/h.

Monday, September 7, 2026

Mid-Morning
Lostant Weather - 2026-09-07 - Morning - Sunny
65°F 19°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-07 - Afternoon - Cloudy
78°F 26°C
Cloudy
Early-Evening
Lostant Weather - 2026-09-07 - Evening - Sunny
71°F 22°C
Sunny
Mild temperatures up to 78°F 26°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds out of the E at 9 mph 14 km/h.

Tuesday, September 8, 2026

Mid-Morning
Lostant Weather - 2026-09-08 - Morning - Cloudy
69°F 20°C
Cloudy
Mid-Afternoon
Lostant Weather - 2026-09-08 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
Lostant Weather - 2026-09-08 - Evening - Sunny
82°F 28°C
Sunny
Very warm with a high of 86°F 30°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds shifting from the S to the SSE at 12 mph 20 km/h. Gusts up to 29 mph 46 km/h.

Wednesday, September 9, 2026

Mid-Morning
Lostant Weather - 2026-09-09 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-09 - Afternoon - Cloudy
81°F 27°C
Cloudy
Early-Evening
Lostant Weather - 2026-09-09 - Evening - Partly Cloudy
74°F 24°C
Partly Cloudy
Warm and summery near 81°F 27°C, sunny in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the W to the NW at 8 mph 13 km/h.

Thursday, September 10, 2026

Mid-Morning
Lostant Weather - 2026-09-10 - Morning - Cloudy
65°F 18°C
Cloudy
Mid-Afternoon
Lostant Weather - 2026-09-10 - Afternoon - Partly Cloudy
76°F 24°C
Partly Cloudy
Early-Evening
Lostant Weather - 2026-09-10 - Evening - Partly Cloudy
69°F 21°C
Partly Cloudy
Comfortable with temperatures reaching 76°F 24°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds switching from the NE to the ENE at 8 mph 12 km/h.

Friday, September 11, 2026

Mid-Morning
Lostant Weather - 2026-09-11 - Morning - Cloudy
64°F 18°C
Cloudy
Mid-Afternoon
Lostant Weather - 2026-09-11 - Afternoon - Partly Cloudy
77°F 25°C
Partly Cloudy
Early-Evening
Lostant Weather - 2026-09-11 - Evening - Overcast
72°F 23°C
Overcast
Enjoyable around 77°F 25°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds moving from the ESE to the SE at 10 mph 16 km/h. Gusts up to 22 mph 34 km/h.

Saturday, September 12, 2026

Mid-Morning
Lostant Weather - 2026-09-12 - Morning - Light Showers
65°F 18°C
Light Showers
Mid-Afternoon
Lostant Weather - 2026-09-12 - Afternoon - Light Showers
82°F 28°C
Light Showers
Early-Evening
Lostant Weather - 2026-09-12 - Evening - Partly Cloudy
81°F 28°C
Partly Cloudy
Very warm near 82°F 28°C, though humidity makes it feel like 85°F 29°C, showers through the afternoon, tapering off by evening, with lower humidity and steady pressure. Winds S at 15 mph 24 km/h. Gusts up to 31 mph 50 km/h.

Sunday, September 13, 2026

Mid-Morning
Lostant Weather - 2026-09-13 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-13 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Lostant Weather - 2026-09-13 - Evening - Partly Cloudy
89°F 32°C
Partly Cloudy
Sizzling hot near 96°F 36°C with a heat index reaching 100°F 38°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds shifting from the SSW to the SSE at 12 mph 19 km/h. Gusts up to 28 mph 45 km/h.

Monday, September 14, 2026

Mid-Morning
Lostant Weather - 2026-09-14 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-14 - Afternoon - Sunny
94°F 34°C
Sunny
Early-Evening
Lostant Weather - 2026-09-14 - Evening - Nearby Thunderstorms
89°F 32°C
Nearby Thunderstorms
Hot and sweltering around 94°F 34°C (heat index 99°F 37°C), locally heavy thunderstorms at times, with lower humidity and steady pressure. Winds turning from the SSW to the S at 11 mph 18 km/h. Gusts up to 26 mph 42 km/h.

Tuesday, September 15, 2026

Mid-Morning
Lostant Weather - 2026-09-15 - Morning - Sunny
80°F 27°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-15 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Lostant Weather - 2026-09-15 - Evening - Sunny
83°F 29°C
Sunny
Hot and sweltering around 91°F 33°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the SSW to the SSE at 11 mph 17 km/h. Gusts up to 24 mph 40 km/h.

Wednesday, September 16, 2026

Mid-Morning
Lostant Weather - 2026-09-16 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Lostant Weather - 2026-09-16 - Afternoon - Sunny
92°F 33°C
Sunny
Early-Evening
Lostant Weather - 2026-09-16 - Evening - Sunny
86°F 30°C
Sunny
Sizzling hot with 92°F 33°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds moving from the SSW to the SSE at 11 mph 18 km/h. Gusts up to 26 mph 43 km/h.

Thursday, September 17, 2026

Mid-Morning
Lostant Weather - 2026-09-17 - Morning - Cloudy
69°F 20°C
Cloudy
Mid-Afternoon
Lostant Weather - 2026-09-17 - Afternoon - Sunny
74°F 24°C
Sunny
Early-Evening
Lostant Weather - 2026-09-17 - Evening - Sunny
68°F 20°C
Sunny
Mild temperatures up to 74°F 24°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the NNW to the NW at 9 mph 14 km/h.

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Weather by the Numbers

Fri, 4th
Lostant IL Weather - Friday, Sep 4, 2026 - Partly Cloudy
Hi: 99°F 37°C
Lo: 74°F 23°C
Sunrise 06:25 AM
Sunset 07:23 PM
Wind W 9 mph14 km/h
Dew Point 74°F23°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 4% *
Humidity 55%
Sat, 5th
Lostant IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 85°F 29°C
Lo: 68°F 20°C
Sunrise 06:26 AM
Sunset 07:22 PM
Wind NE 9 mph14 km/h
Dew Point 72°F22°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 7% *
Humidity 71%
Sun, 6th
Lostant IL Weather - Sunday, Sep 6, 2026 - Overcast
Hi: 77°F 25°C
Lo: 64°F 18°C
Sunrise 06:27 AM
Sunset 07:20 PM
Wind E 11 mph17 km/h
Dew Point 61°F16°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 15% *
Humidity 61%
Mon, 7th
Lostant IL Weather - Monday, Sep 7, 2026 - Partly Cloudy
Hi: 78°F 26°C
Lo: 61°F 16°C
Sunrise 06:28 AM
Sunset 07:18 PM
Wind ESE 10 mph15 km/h
Dew Point 56°F14°C
uv Index 7
Barometric Pressure 30.12 in1020 mb
POP 5% *
Humidity 53%
Tue, 8th
Lostant IL Weather - Tuesday, Sep 8, 2026 - Partly Cloudy
Hi: 87°F 31°C
Lo: 63°F 17°C
Sunrise 06:29 AM
Sunset 07:17 PM
Wind SSW 10 mph15 km/h
Dew Point 60°F16°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 3% *
Humidity 50%
Wed, 9th
Lostant IL Weather - Wednesday, Sep 9, 2026 - Partly Cloudy
Hi: 83°F 28°C
Lo: 68°F 20°C
Sunrise 06:30 AM
Sunset 07:15 PM
Wind NNW 13 mph21 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 5% *
Humidity 56%
Thu, 10th
Lostant IL Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 76°F 24°C
Lo: 59°F 15°C
Sunrise 06:31 AM
Sunset 07:13 PM
Wind NNE 4 mph6 km/h
Dew Point 52°F11°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 6% *
Humidity 49%
Fri, 11th
Lostant IL Weather - Friday, Sep 11, 2026 - Overcast
Hi: 78°F 26°C
Lo: 58°F 14°C
Sunrise 06:32 AM
Sunset 07:11 PM
Wind ESE 8 mph13 km/h
Dew Point 49°F10°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 6% *
Humidity 45%
Sat, 12th
Lostant IL Weather - Saturday, Sep 12, 2026 - Light Rain Shower
Hi: 84°F 29°C
Lo: 65°F 18°C
Sunrise 06:33 AM
Sunset 07:10 PM
Wind SSE 14 mph22 km/h
Dew Point 62°F17°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 38% *
Humidity 68%
Sun, 13th
Lostant IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 97°F 36°C
Lo: 77°F 25°C
Sunrise 06:34 AM
Sunset 07:08 PM
Wind SSW 13 mph21 km/h
Dew Point 65°F19°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 45%
Mon, 14th
Lostant IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 95°F 35°C
Lo: 77°F 25°C
Sunrise 06:35 AM
Sunset 07:06 PM
Wind SSW 14 mph23 km/h
Dew Point 68°F20°C
uv Index 8
Barometric Pressure 30.06 in1018 mb
POP 2% *
Humidity 51%
Tue, 15th
Lostant IL Weather - Tuesday, Sep 15, 2026 - Partly Cloudy
Hi: 91°F 33°C
Lo: 77°F 25°C
Sunrise 06:36 AM
Sunset 07:04 PM
Wind SSW 13 mph21 km/h
Dew Point 60°F16°C
uv Index 8
Barometric Pressure 30.12 in1020 mb
POP 3% *
Humidity 40%
Wed, 16th
Lostant IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 93°F 34°C
Lo: 72°F 22°C
Sunrise 06:37 AM
Sunset 07:03 PM
Wind SSW 11 mph18 km/h
Dew Point 61°F16°C
uv Index 8
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 42%
Thu, 17th
Lostant IL Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 80°F 27°C
Lo: 62°F 17°C
Sunrise 06:38 AM
Sunset 07:01 PM
Wind NNW 12 mph19 km/h
Dew Point 53°F12°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 4% *
Humidity 53%
* POP = Probability of Precipitation. Data for 12:00 PM.