Weather forecast for 10 daysHarristown, IL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 64°F
- 37°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 11mphS 179°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:10 am CDT
- Sunset: 6:12 pm CDT
- details ▼
Tomorrow, on Sunday, expect consistent sunshine and open skies.
A high of a breezy 64.4°F during the day contrasts markedly with a low of an icy 37.4°F at night.
The high temperature is anticipated to match October's standard maximum of 64°F.
Sunrise will be at 7:10 am and sunset at 6:12 pm; tomorrow's daylight will last for 11h and 2min.
A high of a breezy 64.4°F during the day contrasts markedly with a low of an icy 37.4°F at night.
The high temperature is anticipated to match October's standard maximum of 64°F.
Sunrise will be at 7:10 am and sunset at 6:12 pm; tomorrow's daylight will last for 11h and 2min.
10-day overview
Daily temperatures
Warmest period: Friday - Sunday 77°C.
Coldest day: tomorrow 64°C.
Coldest day: tomorrow 64°C.
Chance of precipitation
Highest chance: Monday 26.10. 8%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 36°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphSSE 159°
- Humidity: 79%
- UV index: 0
- Sunrise: 7:09 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 64°F
- 37°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 11mphS 179°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:10 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 70°F
- 39°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSSE 163°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:11 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 41°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphESE 102°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:12 am CDT
- Sunset: 6:09 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 41°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 3mphS 182°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:13 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 43°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphENE 73°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:14 am CDT
- Sunset: 6:07 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 77°F
- 45°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphESE 115°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:15 am CDT
- Sunset: 6:05 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 77°F
- 46°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphSE 140°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:16 am CDT
- Sunset: 6:04 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 77°F
- 48°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphS 185°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:03 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 75°F
- 46°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 6mphSE 146°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:18 am CDT
- Sunset: 6:01 pm CDT
- details ▼
Over the next ten days, conditions will reflect that a combination of dry and sunny and cloudy weather is anticipated.
Rainfall is not predicted in Harristown in the upcoming days.
Expect a substantial fluctuation in daytime highs in the coming days. The temperature is expected to swing from 64.4°F up to 77°F, while the lowest nightly temperature differences will be also quite pronounced, as the overnight lows will vary from 35.6°F to 48.2°F.
With a maximum temperature of 77°F, Friday through next Sunday will be the warmest days; Sunday will be the coldest day, with the highest temperature of 64.4°F.
Rainfall is not predicted in Harristown in the upcoming days.
Expect a substantial fluctuation in daytime highs in the coming days. The temperature is expected to swing from 64.4°F up to 77°F, while the lowest nightly temperature differences will be also quite pronounced, as the overnight lows will vary from 35.6°F to 48.2°F.
With a maximum temperature of 77°F, Friday through next Sunday will be the warmest days; Sunday will be the coldest day, with the highest temperature of 64.4°F.
Updated: Oct 18, 2026 @ 01:09:34 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, in Harristown, a sun-drenched sky is anticipated.
Tomorrow, the highest temperature will be 64.4°F, while the lowest temperature will be 37.4°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be noticeably lower than the average low of 48°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be noticeably lower than the average low of 48°F.
On Sunday, in Harristown, sunrise will be at 7:10 am and sunset at 6:12 pm (CDT).
In Harristown, tomorrow, there will be 11h and 2min of daylight.
