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Crystal Lake Weather Forecast

Temperature, wind, rain and more for Crystal Lake

Illinois, United States Of America

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 27
Apr		09:00

SSW
SSW

 22 / 32 mph 66 / 66°F 82% 1010 mb
Low level cloud: 98%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 20 / 26 mph 68 / 67°F 80% 1011 mb
Low level cloud: 90%
Mid level cloud: 2%
High level cloud: 1%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 18 / 24 mph 72 / 76°F 76% 1011 mb
Low level cloud: 29%
Mid level cloud: 2%
High level cloud: 2%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 11 / 18 mph 72 / 76°F 82% 1011 mb
Low level cloud: 49%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 11 / 18 mph 65 / 65°F 96% 1013 mb
Low level cloud: 49%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 28
Apr		00:00

S
S

 9 / 15 mph 63 / 63°F 98% 1012 mb
Low level cloud: 72%
Mid level cloud: 14%
High level cloud: 100%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

 12 / 21 mph 63 / 63°F 98% 1010 mb
Low level cloud: 82%
Mid level cloud: 54%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
06:00

SSW
SSW

 6 / 9 mph 63 / 63°F 99% 1011 mb
Low level cloud: 100%
Mid level cloud: 67%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 1.1 In of precipitation over the past 3 hours.
1.1 In
09:00

SSW
SSW

 19 / 28 mph 65 / 65°F 92% 1010 mb
Low level cloud: 94%
Mid level cloud: 45%
High level cloud: 48%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

W
W

 14 / 17 mph 68 / 67°F 79% 1011 mb
Low level cloud: 54%
Mid level cloud: 37%
High level cloud: 65%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 9 / 12 mph 57 / 55°F 93% 1012 mb
Low level cloud: 92%
Mid level cloud: 52%
High level cloud: 67%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
18:00

ENE
ENE

 9 / 15 mph 53 / 49°F 96% 1012 mb
Low level cloud: 97%
Mid level cloud: 43%
High level cloud: 92%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 11 / 17 mph 52 / 48°F 97% 1011 mb
Low level cloud: 95%
Mid level cloud: 95%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for Crystal Lake:

For Crystal Lake in the coming week the average daytime maximum temperature will be around 21°C, with a high for the week of 26°C expected on the afternoon of Wednesday 1st. The mean minimum temperature will be 11°C, dipping to its lowest on the morning of Saturday 4th at 4°C. The coming week will have some days seeing a little precipitation and some days with rain. Current predictions suggest Sunday 4th will have the most precipitation with an accumulation of around 46.0mm. On the whole winds are likely to be moderate. The forecast suggests the strongest wind will be on Friday afternoon, coming from a westerly direction, and reaching around 26mph.

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure