Weather forecast for 10 daysCrystal Lake, IA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 19mphSSW 195°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:32 am CDT
- Sunset: 6:27 pm CDT
- details ▼
On Sunday, in Crystal Lake, expect consistent sunshine and open skies.
The day will see a remarkable high of a comfortable 66.2°F, sharply contrasting with a low of a wintry 39.2°F.
Today, the weather pattern will resemble September more than October, with a forecast high of 66.2°F.
Sunrise will be at 7:32 am and sunset at 6:27 pm; the daylight will last for 10h and 55min.
The day will see a remarkable high of a comfortable 66.2°F, sharply contrasting with a low of a wintry 39.2°F.
Today, the weather pattern will resemble September more than October, with a forecast high of 66.2°F.
Sunrise will be at 7:32 am and sunset at 6:27 pm; the daylight will last for 10h and 55min.
10-day overview
Daily temperatures
Warmest day: Thursday 77°C.
Coldest day: Monday 26.10. 64°C.
Coldest day: Monday 26.10. 64°C.
Chance of precipitation
Highest chance: Monday 26.10. 20%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 19mphSSW 195°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:32 am CDT
- Sunset: 6:27 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 41°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 9mphS 170°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:34 am CDT
- Sunset: 6:26 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 45°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 12mphSSE 159°
- Humidity: 56%
- UV index: 3
- Sunrise: 7:35 am CDT
- Sunset: 6:24 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 73°F
- 46°F
Mostly Sunny
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 8mphS 186°
- Humidity: 61%
- UV index: 3
- Sunrise: 7:36 am CDT
- Sunset: 6:22 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 77°F
- 54°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 8mphSSE 157°
- Humidity: 63%
- UV index: 3
- Sunrise: 7:37 am CDT
- Sunset: 6:21 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 57°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 17mphSSE 158°
- Humidity: 53%
- UV index: 3
- Sunrise: 7:39 am CDT
- Sunset: 6:19 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 75°F
- 52°F
Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 17mphS 178°
- Humidity: 46%
- UV index: 2
- Sunrise: 7:40 am CDT
- Sunset: 6:18 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 66°F
- 48°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 8mphNW 311°
- Humidity: 60%
- UV index: 3
- Sunrise: 7:41 am CDT
- Sunset: 6:16 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 64°F
- 50°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 10mphESE 122°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:42 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 66°F
- 48°F
Mostly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 13mphSSE 151°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:44 am CDT
- Sunset: 6:13 pm CDT
- details ▼
In the days ahead, a combination of cloud-filled and sun-filled weather is forecasted.
Rainfall is not anticipated in Crystal Lake in the upcoming days.
There will be a considerable variation in temperature in the upcoming days. The maximum temperature will vary between 64.4°F and 77°F, while the nightly low temperatures will show also a considerable swing, as the lowest temperatures will be recorded between 39.2°F and 57.2°F.
Expect the warmest day on Thursday, with temperatures peaking at 77°F; with the highest temperature of 64.4°F, next Monday will be the coldest day.
Rainfall is not anticipated in Crystal Lake in the upcoming days.
There will be a considerable variation in temperature in the upcoming days. The maximum temperature will vary between 64.4°F and 77°F, while the nightly low temperatures will show also a considerable swing, as the lowest temperatures will be recorded between 39.2°F and 57.2°F.
Expect the warmest day on Thursday, with temperatures peaking at 77°F; with the highest temperature of 64.4°F, next Monday will be the coldest day.
Updated: Oct 18, 2026 @ 10:00:44 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
Today, sunshine is expected with little to no cloud cover.
Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
The highest temperature will be noticeably higher than the average maximum of 56.7°F in October. The lowest temperature today will be in line with the average low temperature.
The highest temperature will be noticeably higher than the average maximum of 56.7°F in October. The lowest temperature today will be in line with the average low temperature.
On Sunday, in Crystal Lake, sunrise will be at 7:32 am and sunset at 6:27 pm (CDT).
In Crystal Lake, the length of the day today will be 10h and 55min.
