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Grigg IL Weather - Clear - 79°F
Clear
79°F
Updated 4:17 am
Feels Like 82°F
Humidity 77%
Wind SSW 5 mph
Barometer  29.98 in
Dew Point 72°F
Grigg IL Weather - Clear - 26°C
Clear
26°C
Updated 4:17 am
Feels Like 28°C
Humidity 77%
Wind SSW 8 km/h
Barometer  101.5 kPa
Dew Point 22°C
Grigg, IL Weather and Current Conditionsgrigg il weather forecast

Grigg, IL Weather Forecast

Grigg Illinois WeatherGrigg, Illinois Weather Weather Forecast
14 day API Grigg, IL weather forecast. Note. Our 7-day weather forecast for Grigg, 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.
Grigg, IL Weather Forecast Dated: 417 AM Fri Sep 04 2026
Expect a hot stretch with plenty of sunshine and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 4, 2026

Mid-Morning
Grigg Weather - 2026-09-04 - Morning - Sunny
87°F 31°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-04 - Afternoon - Partly Cloudy
103°F 39°C
Partly Cloudy
Early-Evening
Grigg Weather - 2026-09-04 - Evening - Overcast
96°F 36°C
Overcast
Scorching hot near 103°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 W to the WSW at 9 mph 14 km/h.

Saturday, September 5, 2026

Mid-Morning
Grigg Weather - 2026-09-05 - Morning - Sunny
90°F 32°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-05 - Afternoon - Overcast
106°F 41°C
Overcast
Early-Evening
Grigg Weather - 2026-09-05 - Evening - Sunny
95°F 35°C
Sunny
Sweltering heat reaching 106°F 41°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and barometric pressure falling. Winds switching from the W to the NW at 6 mph 10 km/h.

Sunday, September 6, 2026

Mid-Morning
Grigg Weather - 2026-09-06 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-06 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Grigg Weather - 2026-09-06 - Evening - Sunny
85°F 29°C
Sunny
Sizzling hot with 96°F 36°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 14 mph 22 km/h. Gusts up to 21 mph 33 km/h.

Monday, September 7, 2026

Mid-Morning
Grigg Weather - 2026-09-07 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-07 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Grigg Weather - 2026-09-07 - Evening - Sunny
86°F 30°C
Sunny
Hot temperatures near 95°F 35°C, sunny throughout the day, with lower humidity and steady pressure. Winds out of the E at 8 mph 12 km/h.

Tuesday, September 8, 2026

Mid-Morning
Grigg Weather - 2026-09-08 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-08 - Afternoon - Sunny
105°F 41°C
Sunny
Early-Evening
Grigg Weather - 2026-09-08 - Evening - Sunny
98°F 37°C
Sunny
Scorching hot near 105°F 41°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds blowing from the SSW at 7 mph 11 km/h.

Wednesday, September 9, 2026

Mid-Morning
Grigg Weather - 2026-09-09 - Morning - Sunny
90°F 32°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-09 - Afternoon - Sunny
106°F 41°C
Sunny
Early-Evening
Grigg Weather - 2026-09-09 - Evening - Sunny
98°F 37°C
Sunny
Sweltering heat reaching 106°F 41°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds WSW at 9 mph 15 km/h. Gusts up to 22 mph 35 km/h.

Thursday, September 10, 2026

Mid-Morning
Grigg Weather - 2026-09-10 - Morning - Partly Cloudy
85°F 30°C
Partly Cloudy
Mid-Afternoon
Grigg Weather - 2026-09-10 - Afternoon - Sunny
104°F 40°C
Sunny
Early-Evening
Grigg Weather - 2026-09-10 - Evening - Sunny
97°F 36°C
Sunny
Dangerously hot temperatures around 104°F 40°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds switching from the SW to the SSW at 10 mph 16 km/h.

Friday, September 11, 2026

Mid-Morning
Grigg Weather - 2026-09-11 - Morning - Sunny
90°F 32°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-11 - Afternoon - Overcast
101°F 39°C
Overcast
Early-Evening
Grigg Weather - 2026-09-11 - Evening - Partly Cloudy
95°F 35°C
Partly Cloudy
Dangerously hot with a high of 101°F 39°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds moving from the SW to the SSW at 11 mph 18 km/h. Gusts up to 20 mph 31 km/h.

Saturday, September 12, 2026

Mid-Morning
Grigg Weather - 2026-09-12 - Morning - Cloudy
90°F 32°C
Cloudy
Mid-Afternoon
Grigg Weather - 2026-09-12 - Afternoon - Partly Cloudy
100°F 38°C
Partly Cloudy
Early-Evening
Grigg Weather - 2026-09-12 - Evening - Overcast
93°F 34°C
Overcast
Scorching hot near 100°F 38°C, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds SW at 14 mph 22 km/h.

Sunday, September 13, 2026

Mid-Morning
Grigg Weather - 2026-09-13 - Morning - Sunny
87°F 30°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-13 - Afternoon - Sunny
101°F 38°C
Sunny
Early-Evening
Grigg Weather - 2026-09-13 - Evening - Partly Cloudy
92°F 34°C
Partly Cloudy
Sweltering heat reaching 101°F 38°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds shifting from the SSW to the W at 19 mph 30 km/h. Gusts up to 27 mph 44 km/h.

Monday, September 14, 2026

Mid-Morning
Grigg Weather - 2026-09-14 - Morning - Light Fog
74°F 23°C
Light Fog
Mid-Afternoon
Grigg Weather - 2026-09-14 - Afternoon - Scattered Showers
82°F 28°C
Scattered Showers
Early-Evening
Grigg Weather - 2026-09-14 - Evening - Scattered Showers
78°F 26°C
Scattered Showers
Quite warm reaching 82°F 28°C, feeling like 85°F 29°C during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. Winds turning from the W to the S at 8 mph 13 km/h.

Tuesday, September 15, 2026

Mid-Morning
Grigg Weather - 2026-09-15 - Morning - Overcast
78°F 26°C
Overcast
Mid-Afternoon
Grigg Weather - 2026-09-15 - Afternoon - Scattered Showers
93°F 34°C
Scattered Showers
Early-Evening
Grigg Weather - 2026-09-15 - Evening - Overcast
86°F 31°C
Overcast
Very hot with a high of 93°F 34°C, feeling closer to 97°F 36°C in the humidity, locally heavy downpours at times, with lower humidity and steady pressure. Winds SW at 15 mph 25 km/h. Gusts up to 20 mph 32 km/h.

Wednesday, September 16, 2026

Mid-Morning
Grigg Weather - 2026-09-16 - Morning - Sunny
87°F 30°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-16 - Afternoon - Sunny
100°F 38°C
Sunny
Early-Evening
Grigg Weather - 2026-09-16 - Evening - Cloudy
93°F 34°C
Cloudy
Scorching hot near 100°F 38°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds out of the SSW at 17 mph 27 km/h.

Thursday, September 17, 2026

Mid-Morning
Grigg Weather - 2026-09-17 - Morning - Sunny
88°F 31°C
Sunny
Mid-Afternoon
Grigg Weather - 2026-09-17 - Afternoon - Sunny
98°F 37°C
Sunny
Early-Evening
Grigg Weather - 2026-09-17 - Evening - Sunny
79°F 26°C
Sunny
Hot and sweltering around 98°F 37°C (heat index 101°F 38°C), sunny through the afternoon, turning overcast this evening, with increasing humidity and steady pressure. Winds swinging from the SSW to the NNW at 8 mph 13 km/h.

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Weather by the Numbers

Fri, 4th
Grigg IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 103°F 40°C
Lo: 77°F 25°C
Sunrise 06:32 AM
Sunset 07:25 PM
Wind WSW 8 mph13 km/h
Dew Point 62°F17°C
uv Index 8
Barometric Pressure 29.94 in1014 mb
POP 0% *
Humidity 30%
Sat, 5th
Grigg IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 106°F 41°C
Lo: 81°F 27°C
Sunrise 06:33 AM
Sunset 07:23 PM
Wind WNW 12 mph19 km/h
Dew Point 62°F16°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 27%
Sun, 6th
Grigg IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 96°F 36°C
Lo: 72°F 22°C
Sunrise 06:34 AM
Sunset 07:22 PM
Wind NE 12 mph19 km/h
Dew Point 66°F19°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 46%
Mon, 7th
Grigg IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 95°F 35°C
Lo: 65°F 18°C
Sunrise 06:34 AM
Sunset 07:20 PM
Wind E 8 mph13 km/h
Dew Point 53°F12°C
uv Index 8
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 30%
Tue, 8th
Grigg IL Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 106°F 41°C
Lo: 70°F 21°C
Sunrise 06:35 AM
Sunset 07:19 PM
Wind S 6 mph9 km/h
Dew Point 54°F12°C
uv Index 8
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 26%
Wed, 9th
Grigg IL Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 107°F 42°C
Lo: 82°F 28°C
Sunrise 06:36 AM
Sunset 07:17 PM
Wind WSW 10 mph17 km/h
Dew Point 60°F15°C
uv Index 9
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 26%
Thu, 10th
Grigg IL Weather - Thursday, Sep 10, 2026 - Patchy Rain Nearby
Hi: 105°F 40°C
Lo: 77°F 25°C
Sunrise 06:37 AM
Sunset 07:16 PM
Wind SW 9 mph14 km/h
Dew Point 63°F17°C
uv Index 8
Barometric Pressure 30.03 in1017 mb
POP 2% *
Humidity 33%
Fri, 11th
Grigg IL Weather - Friday, Sep 11, 2026 - Sunny
Hi: 102°F 39°C
Lo: 81°F 27°C
Sunrise 06:38 AM
Sunset 07:14 PM
Wind SW 11 mph18 km/h
Dew Point 60°F16°C
uv Index 9
Barometric Pressure 29.91 in1013 mb
POP 4% *
Humidity 28%
Sat, 12th
Grigg IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 101°F 38°C
Lo: 80°F 27°C
Sunrise 06:39 AM
Sunset 07:12 PM
Wind SSW 16 mph25 km/h
Dew Point 58°F15°C
uv Index 9
Barometric Pressure 29.91 in1013 mb
POP 2% *
Humidity 27%
Sun, 13th
Grigg IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 102°F 39°C
Lo: 75°F 24°C
Sunrise 06:40 AM
Sunset 07:11 PM
Wind SSW 17 mph28 km/h
Dew Point 61°F16°C
uv Index 9
Barometric Pressure 29.88 in1012 mb
POP 0% *
Humidity 31%
Mon, 14th
Grigg IL Weather - Monday, Sep 14, 2026 - Patchy Rain Nearby
Hi: 84°F 29°C
Lo: 70°F 21°C
Sunrise 06:41 AM
Sunset 07:09 PM
Wind WNW 6 mph9 km/h
Dew Point 67°F19°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 17% *
Humidity 70%
Tue, 15th
Grigg IL Weather - Tuesday, Sep 15, 2026 - Patchy Rain Nearby
Hi: 93°F 34°C
Lo: 72°F 22°C
Sunrise 06:41 AM
Sunset 07:08 PM
Wind SSW 15 mph24 km/h
Dew Point 66°F19°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 10% *
Humidity 47%
Wed, 16th
Grigg IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 101°F 38°C
Lo: 76°F 24°C
Sunrise 06:42 AM
Sunset 07:06 PM
Wind SSW 16 mph26 km/h
Dew Point 61°F16°C
uv Index 9
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 32%
Thu, 17th
Grigg IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 100°F 38°C
Lo: 71°F 22°C
Sunrise 06:43 AM
Sunset 07:05 PM
Wind WSW 10 mph16 km/h
Dew Point 63°F17°C
uv Index 9
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 33%
* POP = Probability of Precipitation. Data for 12:00 PM.