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Hamilton IL Weather - Clear - 78°F
Clear
78°F
Updated 6:32 am
Feels Like 80°F
Humidity 73%
Wind S 8 mph
Barometer  29.92 in
Dew Point 69°F
Hamilton IL Weather - Clear - 26°C
Clear
26°C
Updated 6:32 am
Feels Like 27°C
Humidity 73%
Wind S 13 km/h
Barometer  101.3 kPa
Dew Point 21°C
Hamilton, IL Weather and Current Conditionshamilton il weather forecast

Hamilton, IL Weather Forecast

Hamilton Illinois WeatherHamilton, Illinois Weather Weather Forecast
14 day API forecast for Hamilton, Illinois. Note. The 7-day weather forecast for Hamilton, 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.
Hamilton, IL Weather Forecast Dated: 632 AM Thu Sep 03 2026
Expect a hot stretch with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Thursday, September 3, 2026

Mid-Morning
Hamilton Weather - 2026-09-03 - Morning - Sunny
85°F 29°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-03 - Afternoon - Partly Cloudy
105°F 41°C
Partly Cloudy
Early-Evening
Hamilton Weather - 2026-09-03 - Evening - Sunny
98°F 36°C
Sunny
Scorching hot near 105°F 41°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds turning from the SW to the SSW at 12 mph 19 km/h. Gusts up to 22 mph 35 km/h.

Friday, September 4, 2026

Mid-Morning
Hamilton Weather - 2026-09-04 - Morning - Sunny
82°F 28°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-04 - Afternoon - Overcast
104°F 40°C
Overcast
Early-Evening
Hamilton Weather - 2026-09-04 - Evening - Light Showers
97°F 36°C
Light Showers
Sweltering heat reaching 104°F 40°C, mainly dry until evening showers arrive, with lower humidity and steady pressure. Winds switching from the SW to the SE at 10 mph 15 km/h.

Saturday, September 5, 2026

Mid-Morning
Hamilton Weather - 2026-09-05 - Morning - Sunny
89°F 31°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-05 - Afternoon - Overcast
99°F 37°C
Overcast
Early-Evening
Hamilton Weather - 2026-09-05 - Evening - Light Showers
77°F 25°C
Light Showers
Very hot with a high of 99°F 37°C, feeling closer to 102°F 39°C in the humidity, dry most of the day, with showers developing late, with increasing humidity and steady pressure. Winds moving from the WSW to the S at 11 mph 17 km/h.

Sunday, September 6, 2026

Mid-Morning
Hamilton Weather - 2026-09-06 - Morning - Scattered Showers
76°F 25°C
Scattered Showers
Mid-Afternoon
Hamilton Weather - 2026-09-06 - Afternoon - Sunny
102°F 39°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-06 - Evening - Sunny
89°F 32°C
Sunny
Dangerously hot with a high of 102°F 39°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds swinging from the S to the ENE at 6 mph 10 km/h.

Monday, September 7, 2026

Mid-Morning
Hamilton Weather - 2026-09-07 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Hamilton Weather - 2026-09-07 - Afternoon - Sunny
103°F 39°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-07 - Evening - Overcast
96°F 36°C
Overcast
Scorching hot near 103°F 39°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds shifting from the SE to the SSE at 14 mph 23 km/h. Gusts up to 25 mph 41 km/h.

Tuesday, September 8, 2026

Mid-Morning
Hamilton Weather - 2026-09-08 - Morning - Sunny
91°F 33°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-08 - Afternoon - Sunny
108°F 42°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-08 - Evening - Sunny
103°F 39°C
Sunny
Sweltering heat reaching 108°F 42°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the SSW to the S at 17 mph 27 km/h. Gusts up to 28 mph 45 km/h.

Wednesday, September 9, 2026

Mid-Morning
Hamilton Weather - 2026-09-09 - Morning - Overcast
84°F 29°C
Overcast
Mid-Afternoon
Hamilton Weather - 2026-09-09 - Afternoon - Cloudy
96°F 35°C
Cloudy
Early-Evening
Hamilton Weather - 2026-09-09 - Evening - Sunny
86°F 30°C
Sunny
Hot and sweltering around 96°F 35°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds switching from the WSW to the SE at 10 mph 17 km/h.

Thursday, September 10, 2026

Mid-Morning
Hamilton Weather - 2026-09-10 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Hamilton Weather - 2026-09-10 - Afternoon - Partly Cloudy
86°F 30°C
Partly Cloudy
Early-Evening
Hamilton Weather - 2026-09-10 - Evening - Overcast
78°F 25°C
Overcast
Quite warm around 86°F 30°C, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds blowing from the ENE at 8 mph 13 km/h. Gusts up to 20 mph 33 km/h.

Friday, September 11, 2026

Mid-Morning
Hamilton Weather - 2026-09-11 - Morning - Sunny
72°F 22°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-11 - Afternoon - Sunny
94°F 34°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-11 - Evening - Light Showers
86°F 30°C
Light Showers
Hot temperatures near 94°F 34°C, dry most of the day, with showers developing late, with steady humidity and barometric pressure falling. Winds swinging from the SE to the S at 5 mph 8 km/h.

Saturday, September 12, 2026

Mid-Morning
Hamilton Weather - 2026-09-12 - Morning - Scattered Showers
79°F 26°C
Scattered Showers
Mid-Afternoon
Hamilton Weather - 2026-09-12 - Afternoon - Sunny
101°F 38°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-12 - Evening - Light Showers
94°F 34°C
Light Showers
Sweltering heat reaching 101°F 38°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds shifting from the S to the SSW at 15 mph 24 km/h. Gusts up to 24 mph 39 km/h.

Sunday, September 13, 2026

Mid-Morning
Hamilton Weather - 2026-09-13 - Morning - Sunny
92°F 33°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-13 - Afternoon - Sunny
107°F 42°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-13 - Evening - Sunny
98°F 37°C
Sunny
Dangerously hot temperatures around 107°F 42°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds turning from the SW to the SSW at 17 mph 27 km/h. Gusts up to 28 mph 46 km/h.

Monday, September 14, 2026

Mid-Morning
Hamilton Weather - 2026-09-14 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-14 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-14 - Evening - Sunny
84°F 29°C
Sunny
Hot and sweltering around 96°F 36°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the WNW to the NE at 16 mph 25 km/h. Gusts up to 26 mph 41 km/h.

Tuesday, September 15, 2026

Mid-Morning
Hamilton Weather - 2026-09-15 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Hamilton Weather - 2026-09-15 - Afternoon - Sunny
90°F 32°C
Sunny
Early-Evening
Hamilton Weather - 2026-09-15 - Evening - Sunny
80°F 27°C
Sunny
Sizzling hot with 90°F 32°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds out of the NE at 10 mph 15 km/h.

Wednesday, September 16, 2026

Mid-Morning
Hamilton Weather - 2026-09-16 - Morning - Overcast
71°F 22°C
Overcast
Mid-Afternoon
Hamilton Weather - 2026-09-16 - Afternoon - Overcast
87°F 31°C
Overcast
Early-Evening
Hamilton Weather - 2026-09-16 - Evening - Overcast
76°F 25°C
Overcast
Warm temperatures up to 87°F 31°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the ENE at 10 mph 16 km/h. Gusts up to 22 mph 36 km/h.

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Weather by the Numbers

Thu, 3rd
Hamilton IL Weather - Thursday, Sep 3, 2026 - Partly Cloudy
Hi: 105°F 41°C
Lo: 78°F 26°C
Sunrise 06:35 AM
Sunset 07:34 PM
Wind SW 13 mph21 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 3% *
Humidity 25%
Fri, 4th
Hamilton IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 105°F 40°C
Lo: 79°F 26°C
Sunrise 06:36 AM
Sunset 07:33 PM
Wind WSW 8 mph12 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 25%
Sat, 5th
Hamilton IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 104°F 40°C
Lo: 76°F 24°C
Sunrise 06:37 AM
Sunset 07:31 PM
Wind W 10 mph16 km/h
Dew Point 58°F15°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 0% *
Humidity 24%
Sun, 6th
Hamilton IL Weather - Sunday, Sep 6, 2026 - Patchy Rain Nearby
Hi: 103°F 39°C
Lo: 73°F 23°C
Sunrise 06:38 AM
Sunset 07:30 PM
Wind S 9 mph14 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 17% *
Humidity 35%
Mon, 7th
Hamilton IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 104°F 40°C
Lo: 68°F 20°C
Sunrise 06:39 AM
Sunset 07:28 PM
Wind SE 9 mph14 km/h
Dew Point 57°F14°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 35%
Tue, 8th
Hamilton IL Weather - Tuesday, Sep 8, 2026 - Partly Cloudy
Hi: 109°F 43°C
Lo: 82°F 28°C
Sunrise 06:40 AM
Sunset 07:26 PM
Wind SW 15 mph25 km/h
Dew Point 58°F14°C
uv Index 9
Barometric Pressure 29.85 in1011 mb
POP 1% *
Humidity 23%
Wed, 9th
Hamilton IL Weather - Wednesday, Sep 9, 2026 - Patchy Rain Nearby
Hi: 98°F 37°C
Lo: 75°F 24°C
Sunrise 06:41 AM
Sunset 07:25 PM
Wind N 10 mph17 km/h
Dew Point 43°F6°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 7% *
Humidity 20%
Thu, 10th
Hamilton IL Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 86°F 30°C
Lo: 65°F 19°C
Sunrise 06:42 AM
Sunset 07:23 PM
Wind ENE 9 mph15 km/h
Dew Point 45°F7°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 2% *
Humidity 27%
Fri, 11th
Hamilton IL Weather - Friday, Sep 11, 2026 - Cloudy
Hi: 96°F 35°C
Lo: 62°F 17°C
Sunrise 06:43 AM
Sunset 07:21 PM
Wind SSE 12 mph19 km/h
Dew Point 56°F13°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 2% *
Humidity 36%
Sat, 12th
Hamilton IL Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 101°F 38°C
Lo: 73°F 23°C
Sunrise 06:44 AM
Sunset 07:20 PM
Wind S 15 mph24 km/h
Dew Point 64°F18°C
uv Index 7
Barometric Pressure 29.8 in1009 mb
POP 3% *
Humidity 40%
Sun, 13th
Hamilton IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 108°F 42°C
Lo: 80°F 27°C
Sunrise 06:45 AM
Sunset 07:18 PM
Wind SW 19 mph31 km/h
Dew Point 55°F13°C
uv Index 9
Barometric Pressure 29.77 in1008 mb
POP 0% *
Humidity 22%
Mon, 14th
Hamilton IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 97°F 36°C
Lo: 74°F 24°C
Sunrise 06:46 AM
Sunset 07:16 PM
Wind ESE 11 mph18 km/h
Dew Point 52°F11°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 25%
Tue, 15th
Hamilton IL Weather - Tuesday, Sep 15, 2026 - Overcast
Hi: 91°F 33°C
Lo: 66°F 19°C
Sunrise 06:47 AM
Sunset 07:15 PM
Wind ENE 9 mph15 km/h
Dew Point 32°F0°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 2% *
Humidity 16%
Wed, 16th
Hamilton IL Weather - Wednesday, Sep 16, 2026 - Partly Cloudy
Hi: 88°F 31°C
Lo: 62°F 17°C
Sunrise 06:47 AM
Sunset 07:13 PM
Wind ENE 8 mph13 km/h
Dew Point 40°F4°C
uv Index 7
Barometric Pressure 30.15 in1021 mb
POP 7% *
Humidity 22%
* POP = Probability of Precipitation