Weather forecast for todayCrystal Lake, IL
Weather forecast for today
Current condition 5:23 am CDT
- 46°F
- Feels like:46°F
Partly Cloudy
- Precipitation: 0"
- Wind: 1mphNNE 20°
- Humidity: 72%
- Dewpoint: 39°F
- Pressure: 30.29"Hg
- Visibility: 3mi
- UV index: 0
- details ▼
Currently, in Crystal Lake, the sky is covered by scattered clouds with bright spots in between.
The temperature is a brisk 46.4°F. The current temperature is almost at the minimum-expected 44.6°F for today.
The temperature is a brisk 46.4°F. The current temperature is almost at the minimum-expected 44.6°F for today.
Wednesday Oct 21, 2026
- 72°F
- 45°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSW 219°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:13 am CDT
- Sunset: 6:02 pm CDT
- details ▼
On Wednesday, October 21, thin clouds will pass through at times, but overall, it will remain bright.
Dramatic temperature shifts from a high of a pleasant 71.6°F to a low of a frosty 44.6°F are anticipated.
The expected high of 71.6°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:13 am and sunset at 6:02 pm; the daylight will last for 10h and 49min.
Dramatic temperature shifts from a high of a pleasant 71.6°F to a low of a frosty 44.6°F are anticipated.
The expected high of 71.6°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:13 am and sunset at 6:02 pm; the daylight will last for 10h and 49min.
Hourly overview
Hourly temperatures
Warmest hour: 2 pm 72°C.
Coldest hour: 6 am 46°C.
Coldest hour: 6 am 46°C.
Chance of precipitation
Highest chance: 12 am 6%.
Hourly weather forecast
- 6 am
- 46°F
- Feels like:46°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphS 185°
- Humidity: 74%
- Pressure: 30.27"Hg
- Visibility: 1mi
- UV index: 0
- details ▼
Sunrise: 7:13 am
- 8 am
- 48°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphSSW 203°
- Humidity: 76%
- Pressure: 30.27"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
- 10 am
- 57°F
- Feels like:57°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphSSW 211°
- Humidity: 63%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSW 221°
- Humidity: 44%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 72°F
- Feels like:72°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSW 232°
- Humidity: 39%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 70°F
- Feels like:70°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSW 234°
- Humidity: 40%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSW 228°
- Humidity: 55%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:02 pm
- 8 pm
- 57°F
- Feels like:57°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 1mphWSW 238°
- Humidity: 70%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:52°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 1mphW 262°
- Humidity: 80%
- Pressure: 30.21"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Today, in Crystal Lake, primarily clear and occasionally cloudy weather is anticipated.
The temperature will vary between the lowest temperature of 46.4°F and the highest temperature of 71.6°F. The warmest part of the day will be at 2 pm and 3 pm.
The day’s peak temperature will reflect September's norm of 72.5°F more than October's 59°F. The night temperature will be comparable to the standard October low of 43.9°F.
The temperature will vary between the lowest temperature of 46.4°F and the highest temperature of 71.6°F. The warmest part of the day will be at 2 pm and 3 pm.
The day’s peak temperature will reflect September's norm of 72.5°F more than October's 59°F. The night temperature will be comparable to the standard October low of 43.9°F.
Updated: Oct 21, 2026 @ 10:23:20 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
The current temperature (5:23 am CDT) is 46.4°F.
Today, high-altitude clouds may scatter across the sky, but the sun will still shine.
Today, the highest temperature will be 71.6°F, while the lowest temperature will be 44.6°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 59°F in October. The lowest temperature will be in line with the average low of 43.9°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 59°F in October. The lowest temperature will be in line with the average low of 43.9°F.
On Wednesday, in Crystal Lake, sunrise will be at 7:13 am and sunset at 6:02 pm (CDT).
Today, the daylight will last for 10h and 49min.
Crystal Lake, Illinois, USA
- en: Crystal Lake, Illinois, USA
- es: Crystal Lake, Illinois, EE.UU.
- hr: Kristal Lejk, Ilinois, SAD
- mk: Kristal Lejk, Ilinois, SAD
- sr: Kristal Lejk, Ilinois, SAD
- zh: 克里斯特尔莱克, 伊利诺伊, 美国
- Latitude: 42.241134°
- Longitude: -88.316196°
- Elevation: 909 ft
- Current time: 5:23am CDT
- Sunrise: 7:13 am CDT
- Sunset: 6:02 pm CDT
- Timezone: America/Chicago
Nearby Crystal Lake, Illinois, USA
- Oakwood Hills (4 mi)
- Prairie Grove (4 mi)
- Cary (4 mi)
- Lake in the Hills (4 mi)
- Algonquin (6 mi)
- Holiday Hills (6 mi)
- Bull Valley (6 mi)
- Port Barrington (6 mi)
- Fox River Grove (6 mi)
- Island Lake (7 mi)
- McHenry (7 mi)
- Huntley (7 mi)
- Lake Barrington (8 mi)
- Woodstock (9 mi)
- Lakemoor (9 mi)
- Carpentersville (9 mi)
- McCullom Lake (9 mi)
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- North Barrington (9 mi)
- Barrington Hills (9 mi)
- Gilberts (10 mi)
- Wonder Lake (10 mi)
- East Dundee (10 mi)
- Sleepy Hollow (10 mi)
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