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Harco IL Weather - Mostly Cloudy - 72°F
Mostly Cloudy
72°F
Updated 12:17 am
Feels Like 81°F
Humidity 84%
Wind N 0 mph
Barometer  29.94 in
Dew Point 67°F
Harco IL Weather - Mostly Cloudy - 22°C
Mostly Cloudy
22°C
Updated 12:17 am
Feels Like 27°C
Humidity 84%
Wind N 0 km/h
Barometer  101.4 kPa
Dew Point 19°C
Harco, IL Weather and Current Conditionsharco il weather forecast

Harco, IL Weather Forecast

Harco Illinois WeatherHarco, Illinois Weather Weather Forecast
14 day API weather forecast for Harco, Illinois. Note: The 7-day weather forecast for Harco, IL is the most reliable and accurate weather forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days ahead.
Harco, IL Weather Forecast Dated: 1217 AM Sun Sep 20 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Sunday, September 20, 2026

Mid-Morning
Harco Weather - 2026-09-20 - Morning - Overcast
84°F 29°C
Overcast
Mid-Afternoon
Harco Weather - 2026-09-20 - Afternoon - Overcast
99°F 37°C
Overcast
Early-Evening
Harco Weather - 2026-09-20 - Evening - Overcast
91°F 33°C
Overcast
Very hot with temperatures reaching 99°F 37°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the W to the NW at 8 mph 12 km/h.

Monday, September 21, 2026

Mid-Morning
Harco Weather - 2026-09-21 - Morning - Heavy Rain Showers
69°F 20°C
Heavy Rain Showers
Mid-Afternoon
Harco Weather - 2026-09-21 - Afternoon - Light Showers
74°F 24°C
Light Showers
Early-Evening
Harco Weather - 2026-09-21 - Evening - Light Showers
68°F 21°C
Light Showers
Comfortable with temperatures reaching 74°F 24°C, persistent showers off and on through the day, with steady humidity and steady pressure. Winds blowing from the NNW at 10 mph 15 km/h.

Tuesday, September 22, 2026

Mid-Morning
Harco Weather - 2026-09-22 - Morning - Scattered Showers
64°F 18°C
Scattered Showers
Mid-Afternoon
Harco Weather - 2026-09-22 - Afternoon - Partly Cloudy
75°F 24°C
Partly Cloudy
Early-Evening
Harco Weather - 2026-09-22 - Evening - Sunny
71°F 22°C
Sunny
Enjoyable around 75°F 24°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds NNE at 9 mph 14 km/h.

Wednesday, September 23, 2026

Mid-Morning
Harco Weather - 2026-09-23 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Harco Weather - 2026-09-23 - Afternoon - Partly Cloudy
77°F 25°C
Partly Cloudy
Early-Evening
Harco Weather - 2026-09-23 - Evening - Partly Cloudy
72°F 22°C
Partly Cloudy
Mild temperatures up to 77°F 25°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds out of the N at 12 mph 20 km/h.

Thursday, September 24, 2026

Mid-Morning
Harco Weather - 2026-09-24 - Morning - Fog
62°F 17°C
Fog
Mid-Afternoon
Harco Weather - 2026-09-24 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Harco Weather - 2026-09-24 - Evening - Sunny
71°F 22°C
Sunny
Mild with a high of 77°F 25°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds shifting from the NNE to the NE at 6 mph 10 km/h.

Friday, September 25, 2026

Mid-Morning
Harco Weather - 2026-09-25 - Morning - Light Fog
65°F 18°C
Light Fog
Mid-Afternoon
Harco Weather - 2026-09-25 - Afternoon - Overcast
78°F 25°C
Overcast
Early-Evening
Harco Weather - 2026-09-25 - Evening - Overcast
72°F 23°C
Overcast
Pleasant near 78°F 25°C, overcast throughout the day, with lower humidity and steady pressure. Winds turning from the E to the ENE at 8 mph 14 km/h.

Saturday, September 26, 2026

Mid-Morning
Harco Weather - 2026-09-26 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
Harco Weather - 2026-09-26 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Harco Weather - 2026-09-26 - Evening - Partly Cloudy
71°F 22°C
Partly Cloudy
Comfortable with temperatures reaching 78°F 26°C, partly cloudy through the afternoon, turning sunny this evening, with steady humidity and steady pressure. Winds out of the ENE at 10 mph 15 km/h.

Sunday, September 27, 2026

Mid-Morning
Harco Weather - 2026-09-27 - Morning - Scattered Showers
56°F 13°C
Scattered Showers
Mid-Afternoon
Harco Weather - 2026-09-27 - Afternoon - Scattered Showers
58°F 15°C
Scattered Showers
Early-Evening
Harco Weather - 2026-09-27 - Evening - Scattered Showers
70°F 21°C
Scattered Showers
Cool with a high near 58°F 15°C, scattered downpours possible, with lower humidity and steady pressure.

Monday, September 28, 2026

Mid-Morning
Harco Weather - 2026-09-28 - Morning - Sunny
70°F 21°C
Sunny
Mid-Afternoon
Harco Weather - 2026-09-28 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
Harco Weather - 2026-09-28 - Evening - Sunny
78°F 25°C
Sunny
Warm temperatures up to 86°F 30°C, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure.

Tuesday, September 29, 2026

Mid-Morning
Harco Weather - 2026-09-29 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Harco Weather - 2026-09-29 - Afternoon - Overcast
73°F 23°C
Overcast
Early-Evening
Harco Weather - 2026-09-29 - Evening - Overcast
64°F 18°C
Overcast
Mild with a high of 73°F 23°C, overcast throughout the day, with increasing humidity and steady pressure.

Wednesday, September 30, 2026

Mid-Morning
Harco Weather - 2026-09-30 - Morning - Light Fog
62°F 17°C
Light Fog
Mid-Afternoon
Harco Weather - 2026-09-30 - Afternoon - Scattered Showers
69°F 21°C
Scattered Showers
Early-Evening
Harco Weather - 2026-09-30 - Evening - Overcast
67°F 19°C
Overcast
Pleasant near 69°F 21°C, scattered downpours possible, with lower humidity and steady pressure.

Thursday, October 1, 2026

Mid-Morning
Harco Weather - 2026-10-01 - Morning - Overcast
64°F 18°C
Overcast
Mid-Afternoon
Harco Weather - 2026-10-01 - Afternoon - Cloudy
75°F 24°C
Cloudy
Early-Evening
Harco Weather - 2026-10-01 - Evening - Overcast
70°F 21°C
Overcast
Comfortable with temperatures reaching 75°F 24°C, overcast throughout the day, with lower humidity and steady pressure.

Friday, October 2, 2026

Mid-Morning
Harco Weather - 2026-10-02 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Harco Weather - 2026-10-02 - Afternoon - Sunny
74°F 23°C
Sunny
Early-Evening
Harco Weather - 2026-10-02 - Evening - Cloudy
67°F 20°C
Cloudy
Enjoyable around 74°F 23°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the N to the ESE at 9 mph 15 km/h.

Saturday, October 3, 2026

Mid-Morning
Harco Weather - 2026-10-03 - Morning - Fog
62°F 17°C
Fog
Mid-Afternoon
Harco Weather - 2026-10-03 - Afternoon - Partly Cloudy
74°F 24°C
Partly Cloudy
Early-Evening
Harco Weather - 2026-10-03 - Evening - Sunny
67°F 20°C
Sunny
Mild temperatures up to 74°F 24°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the NE to the ENE at 8 mph 13 km/h.

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Weather by the Numbers

Sun, 20th
Harco IL Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 99°F 37°C
Lo: 77°F 25°C
Sunrise 06:40 AM
Sunset 06:54 PM
Wind WSW 10 mph17 km/h
Dew Point 54°F12°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 8% *
Humidity 25%
Mon, 21st
Harco IL Weather - Monday, Sep 21, 2026 - Overcast
Hi: 79°F 26°C
Lo: 67°F 19°C
Sunrise 06:41 AM
Sunset 06:52 PM
Wind NE 8 mph13 km/h
Dew Point 66°F19°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 19% *
Humidity 73%
Tue, 22nd
Harco IL Weather - Tuesday, Sep 22, 2026 - Patchy Rain Nearby
Hi: 76°F 24°C
Lo: 63°F 17°C
Sunrise 06:42 AM
Sunset 06:51 PM
Wind NNE 8 mph13 km/h
Dew Point 59°F15°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 18% *
Humidity 69%
Wed, 23rd
Harco IL Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 78°F 25°C
Lo: 58°F 14°C
Sunrise 06:43 AM
Sunset 06:49 PM
Wind N 9 mph14 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 3% *
Humidity 50%
Thu, 24th
Harco IL Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 78°F 26°C
Lo: 55°F 13°C
Sunrise 06:44 AM
Sunset 06:48 PM
Wind NE 8 mph13 km/h
Dew Point 53°F11°C
uv Index 6
Barometric Pressure 30.18 in1022 mb
POP 2% *
Humidity 51%
Fri, 25th
Harco IL Weather - Friday, Sep 25, 2026 - Overcast
Hi: 79°F 26°C
Lo: 58°F 14°C
Sunrise 06:45 AM
Sunset 06:46 PM
Wind E 6 mph10 km/h
Dew Point 55°F13°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 12% *
Humidity 53%
Sat, 26th
Harco IL Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 79°F 26°C
Lo: 60°F 16°C
Sunrise 06:45 AM
Sunset 06:45 PM
Wind ENE 10 mph16 km/h
Dew Point 51°F11°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 2% *
Humidity 47%
Sun, 27th
Harco IL Weather - Sunday, Sep 27, 2026 - Patchy Rain Nearby
Hi: 74°F 23°C
Lo: 54°F 12°C
Sunrise 06:46 AM
Sunset 06:43 PM
Wind NE 6 mph9 km/h
Dew Point 51°F10°C
uv Index 3
Barometric Pressure 30 in1016 mb
POP 37% *
Humidity 85%
Mon, 28th
Harco IL Weather - Monday, Sep 28, 2026 - Sunny
Hi: 87°F 31°C
Lo: 61°F 16°C
Sunrise 06:47 AM
Sunset 06:42 PM
Wind SW 5 mph8 km/h
Dew Point 50°F10°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 34%
Tue, 29th
Harco IL Weather - Tuesday, Sep 29, 2026 - Overcast
Hi: 73°F 23°C
Lo: 62°F 17°C
Sunrise 06:48 AM
Sunset 06:40 PM
Wind WNW 4 mph6 km/h
Dew Point 49°F9°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 11% *
Humidity 44%
Wed, 30th
Harco IL Weather - Wednesday, Sep 30, 2026 - Thundery Outbreaks In Nearby
Hi: 70°F 21°C
Lo: 59°F 15°C
Sunrise 06:49 AM
Sunset 06:38 PM
Wind N 7 mph12 km/h
Dew Point 57°F14°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 18% *
Humidity 71%
Thu, 1st
Harco IL Weather - Thursday, Oct 1, 2026 - Overcast
Hi: 75°F 24°C
Lo: 59°F 15°C
Sunrise 06:50 AM
Sunset 06:37 PM
Wind ENE 2 mph3 km/h
Dew Point 53°F12°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 10% *
Humidity 51%
Fri, 2nd
Harco IL Weather - Friday, Oct 2, 2026 - Sunny
Hi: 74°F 24°C
Lo: 56°F 14°C
Sunrise 06:51 AM
Sunset 06:35 PM
Wind WSW 8 mph12 km/h
Dew Point 49°F9°C
uv Index 6
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 44%
Sat, 3rd
Harco IL Weather - Saturday, Oct 3, 2026 - Partly Cloudy
Hi: 75°F 24°C
Lo: 56°F 13°C
Sunrise 06:52 AM
Sunset 06:34 PM
Wind NE 11 mph17 km/h
Dew Point 53°F12°C
uv Index 6
Barometric Pressure 30.3 in1026 mb
POP 4% *
Humidity 56%
* POP = Probability of Precipitation. Data for 12:00 PM.