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Belknap IL Weather - Lightning Observed - 85°F
Lightning Observed
85°F
Updated 5:13 pm
Feels Like 83°F
Humidity 72%
Wind NE 3 mph
Barometer  29.89 in
Dew Point 75°F
Belknap IL Weather - Lightning Observed - 29°C
Lightning Observed
29°C
Updated 5:13 pm
Feels Like 28°C
Humidity 72%
Wind NE 5 km/h
Barometer  101.2 kPa
Dew Point 24°C
Belknap, IL Weather and Current Conditionsbelknap il weather forecast

Belknap, IL Weather Forecast

Belknap Illinois WeatherBelknap, Illinois Weather Weather Forecast
14 day API forecast for Belknap, Illinois. Note. The 7-day weather forecast for Belknap, 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.
Belknap, IL Weather Forecast Dated: 513 PM Thu Sep 10 2026
Expect a very warm period 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.

Thursday, September 10, 2026

Mid-Morning
Belknap Weather - 2026-09-10 - Morning - Sunny
80°F 27°C
Sunny
Mid-Afternoon
Belknap Weather - 2026-09-10 - Afternoon - Heavy Rain
76°F 24°C
Heavy Rain
Early-Evening
Belknap Weather - 2026-09-10 - Evening - Heavy Rain At Times
77°F 25°C
Heavy Rain At Times
Pleasant near 76°F 24°C, drier morning followed by showers lasting through evening, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds turning from the SW to the NNE at 8 mph 12 km/h.

Friday, September 11, 2026

Mid-Morning
Belknap Weather - 2026-09-11 - Morning - Light Fog
71°F 22°C
Light Fog
Mid-Afternoon
Belknap Weather - 2026-09-11 - Afternoon - Light Showers
72°F 22°C
Light Showers
Early-Evening
Belknap Weather - 2026-09-11 - Evening - Light Showers
72°F 22°C
Light Showers
Comfortable with temperatures reaching 72°F 22°C, clouds and showers taking over for the afternoon and evening, with steady humidity and steady pressure.

Saturday, September 12, 2026

Mid-Morning
Belknap Weather - 2026-09-12 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Belknap Weather - 2026-09-12 - Afternoon - Sunny
89°F 32°C
Sunny
Early-Evening
Belknap Weather - 2026-09-12 - Evening - Scattered Showers
81°F 28°C
Scattered Showers
Very warm near 89°F 32°C, though humidity makes it feel like 92°F 33°C, locally heavy downpours at times, with lower humidity and steady pressure.

Sunday, September 13, 2026

Mid-Morning
Belknap Weather - 2026-09-13 - Morning - Sunny
80°F 27°C
Sunny
Mid-Afternoon
Belknap Weather - 2026-09-13 - Afternoon - Sunny
98°F 37°C
Sunny
Early-Evening
Belknap Weather - 2026-09-13 - Evening - Sunny
90°F 32°C
Sunny
Hot temperatures near 98°F 37°C, sunny throughout the day, with lower humidity and steady pressure.

Monday, September 14, 2026

Mid-Morning
Belknap Weather - 2026-09-14 - Morning - Sunny
82°F 28°C
Sunny
Mid-Afternoon
Belknap Weather - 2026-09-14 - Afternoon - Partly Cloudy
100°F 38°C
Partly Cloudy
Early-Evening
Belknap Weather - 2026-09-14 - Evening - Overcast
94°F 34°C
Overcast
Scorching hot near 100°F 38°C, sunny in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds switching from the SW to the SSE at 6 mph 10 km/h.

Tuesday, September 15, 2026

Mid-Morning
Belknap Weather - 2026-09-15 - Morning - Sunny
86°F 30°C
Sunny
Mid-Afternoon
Belknap Weather - 2026-09-15 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Belknap Weather - 2026-09-15 - Evening - Overcast
84°F 29°C
Overcast
Very hot with a high of 95°F 35°C, feeling closer to 98°F 37°C in the humidity, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds moving from the SSW to the WNW at 9 mph 14 km/h.

Wednesday, September 16, 2026

Mid-Morning
Belknap Weather - 2026-09-16 - Morning - Partly Cloudy
80°F 27°C
Partly Cloudy
Mid-Afternoon
Belknap Weather - 2026-09-16 - Afternoon - Sunny
94°F 34°C
Sunny
Early-Evening
Belknap Weather - 2026-09-16 - Evening - Scattered Showers
79°F 26°C
Scattered Showers
Sizzling hot near 94°F 34°C with a heat index reaching 99°F 37°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds swinging from the WSW to the NE at 9 mph 14 km/h.

Thursday, September 17, 2026

Mid-Morning
Belknap Weather - 2026-09-17 - Morning - Light Showers
71°F 22°C
Light Showers
Mid-Afternoon
Belknap Weather - 2026-09-17 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Belknap Weather - 2026-09-17 - Evening - Overcast
75°F 24°C
Overcast
Enjoyable around 79°F 26°C, scattered morning showers before drying out later, with lower humidity and steady pressure. Winds shifting from the NNE to the NE at 9 mph 14 km/h.

Friday, September 18, 2026

Mid-Morning
Belknap Weather - 2026-09-18 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Belknap Weather - 2026-09-18 - Afternoon - Sunny
81°F 27°C
Sunny
Early-Evening
Belknap Weather - 2026-09-18 - Evening - Overcast
75°F 24°C
Overcast
Warm temperatures up to 81°F 27°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds NE at 8 mph 13 km/h.

Saturday, September 19, 2026

Mid-Morning
Belknap Weather - 2026-09-19 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Belknap Weather - 2026-09-19 - Afternoon - Overcast
74°F 24°C
Overcast
Early-Evening
Belknap Weather - 2026-09-19 - Evening - Overcast
72°F 23°C
Overcast
Mild with a high of 74°F 24°C, overcast throughout the day, with steady humidity and steady pressure. Winds switching from the NE to the SE at 5 mph 9 km/h.

Sunday, September 20, 2026

Mid-Morning
Belknap Weather - 2026-09-20 - Morning - Cloudy
71°F 21°C
Cloudy
Mid-Afternoon
Belknap Weather - 2026-09-20 - Afternoon - Overcast
74°F 24°C
Overcast
Early-Evening
Belknap Weather - 2026-09-20 - Evening - Light Showers
68°F 20°C
Light Showers
Pleasant near 74°F 24°C, mainly dry until evening showers arrive, with increasing humidity and steady pressure. Winds moving from the NE to the ENE at 9 mph 15 km/h. Gusts up to 21 mph 33 km/h.

Monday, September 21, 2026

Mid-Morning
Belknap Weather - 2026-09-21 - Morning - Light Showers
66°F 19°C
Light Showers
Mid-Afternoon
Belknap Weather - 2026-09-21 - Afternoon - Fog
69°F 21°C
Fog
Early-Evening
Belknap Weather - 2026-09-21 - Evening - Light Showers
69°F 21°C
Light Showers
Comfortable with temperatures reaching 69°F 21°C, passing showers during morning and evening, with a dry break midday, with steady humidity and steady pressure.

Tuesday, September 22, 2026

Mid-Morning
Belknap Weather - 2026-09-22 - Morning - Light Showers
68°F 20°C
Light Showers
Mid-Afternoon
Belknap Weather - 2026-09-22 - Afternoon - Scattered Showers
82°F 28°C
Scattered Showers
Early-Evening
Belknap Weather - 2026-09-22 - Evening - Sunny
75°F 24°C
Sunny
Quite warm around 82°F 28°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure.

Wednesday, September 23, 2026

Mid-Morning
Belknap Weather - 2026-09-23 - Morning - Fog
61°F 16°C
Fog
Mid-Afternoon
Belknap Weather - 2026-09-23 - Afternoon - Sunny
74°F 24°C
Sunny
Early-Evening
Belknap Weather - 2026-09-23 - Evening - Sunny
67°F 19°C
Sunny
Mild temperatures up to 74°F 24°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds NNW at 12 mph 19 km/h.

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Weather by the Numbers

Thu, 10th
Belknap IL Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 88°F 31°C
Lo: 74°F 23°C
Sunrise 06:34 AM
Sunset 07:11 PM
Wind WSW 6 mph10 km/h
Dew Point 73°F23°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 14% *
Humidity 61%
Fri, 11th
Belknap IL Weather - Friday, Sep 11, 2026 - Patchy Rain Nearby
Hi: 76°F 25°C
Lo: 70°F 21°C
Sunrise 06:35 AM
Sunset 07:10 PM
Wind SW 2 mph4 km/h
Dew Point 70°F21°C
uv Index 1
Barometric Pressure 29.94 in1014 mb
POP 32% *
Humidity 87%
Sat, 12th
Belknap IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 90°F 32°C
Lo: 69°F 20°C
Sunrise 06:36 AM
Sunset 07:08 PM
Wind SW 6 mph9 km/h
Dew Point 67°F20°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 3% *
Humidity 56%
Sun, 13th
Belknap IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 98°F 37°C
Lo: 72°F 22°C
Sunrise 06:36 AM
Sunset 07:07 PM
Wind SSW 5 mph9 km/h
Dew Point 64°F18°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 38%
Mon, 14th
Belknap IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 100°F 38°C
Lo: 75°F 24°C
Sunrise 06:37 AM
Sunset 07:05 PM
Wind SW 9 mph15 km/h
Dew Point 64°F18°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 35%
Tue, 15th
Belknap IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 99°F 37°C
Lo: 75°F 24°C
Sunrise 06:38 AM
Sunset 07:04 PM
Wind SW 10 mph16 km/h
Dew Point 64°F18°C
uv Index 9
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 36%
Wed, 16th
Belknap IL Weather - Wednesday, Sep 16, 2026 - Patchy Rain Nearby
Hi: 96°F 35°C
Lo: 74°F 23°C
Sunrise 06:39 AM
Sunset 07:02 PM
Wind SW 6 mph10 km/h
Dew Point 69°F20°C
uv Index 7
Barometric Pressure 30.15 in1021 mb
POP 36% *
Humidity 50%
Thu, 17th
Belknap IL Weather - Thursday, Sep 17, 2026 - Patchy Rain Nearby
Hi: 80°F 27°C
Lo: 68°F 20°C
Sunrise 06:40 AM
Sunset 07:00 PM
Wind NNE 10 mph15 km/h
Dew Point 66°F19°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 17% *
Humidity 68%
Fri, 18th
Belknap IL Weather - Friday, Sep 18, 2026 - Sunny
Hi: 82°F 28°C
Lo: 66°F 19°C
Sunrise 06:40 AM
Sunset 06:59 PM
Wind NE 8 mph13 km/h
Dew Point 58°F15°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 3% *
Humidity 53%
Sat, 19th
Belknap IL Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 75°F 24°C
Lo: 62°F 16°C
Sunrise 06:41 AM
Sunset 06:57 PM
Wind ENE 9 mph14 km/h
Dew Point 46°F8°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 10% *
Humidity 41%
Sun, 20th
Belknap IL Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 75°F 24°C
Lo: 66°F 19°C
Sunrise 06:42 AM
Sunset 06:56 PM
Wind E 9 mph15 km/h
Dew Point 55°F13°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 12% *
Humidity 54%
Mon, 21st
Belknap IL Weather - Monday, Sep 21, 2026 - Light Rain Shower
Hi: 70°F 21°C
Lo: 66°F 19°C
Sunrise 06:43 AM
Sunset 06:54 PM
Wind E 4 mph6 km/h
Dew Point 67°F19°C
uv Index 4
Barometric Pressure 29.85 in1011 mb
POP 65% *
Humidity 98%
Tue, 22nd
Belknap IL Weather - Tuesday, Sep 22, 2026 - Patchy Rain Nearby
Hi: 83°F 29°C
Lo: 66°F 19°C
Sunrise 06:44 AM
Sunset 06:53 PM
Wind NNE 5 mph8 km/h
Dew Point 64°F18°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 13% *
Humidity 71%
Wed, 23rd
Belknap IL Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 75°F 24°C
Lo: 57°F 14°C
Sunrise 06:45 AM
Sunset 06:51 PM
Wind NNW 11 mph17 km/h
Dew Point 48°F9°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 47%
* POP = Probability of Precipitation. Data for 12:00 PM.