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As of 09:40 CDT

Weather in Crystal Lake, IL

74°Current weather

Crystal Lake, Sunday, 9 August, 09:40

Clear. Feels like 75°. High 85°, low 62°.

Pressure30.00 inHg
Wind9 mph S
Humidity81%
Visibility6.2 mi
Dew point68°

Two-week outlook for Crystal Lake, IL: week one averages a high of 79.4° and week two 75.6°, so week two runs 3.7° cooler than week one. Around 2.9 inches of precipitation are expected over the 14 days, across 8 wet days. The nearest weekend, August 9: 85°, with precipitation.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)79.4°62.6°2.4 in / 5 d—
2nd (August 16 – August 22)75.6°60.4°0.5 in / 3 d—

Weekend weather

Sun, August 9
Heavy rain
85°62°
0.81 in
Sat, August 15
Light rain
75°60°
0.06 in
Sun, August 16
Light rain
73°64°
0.21 in
Sat, August 22
Light rain
79°62°
0.02 in
Mon, 1088° / 71°0.52Heavy rain
88 °Heavy rain

Crystal Lake, Monday, 10 August

Heavy rain. High 88°, low 71°.

Pressure29.91 inHg
Wind4.1 mph E
Humidity72%
Visibility6.2 mi
Dew point73°
Tue, 1182° / 65°0.91Heavy rain
82 °Heavy rain

Crystal Lake, Tuesday, 11 August

Heavy rain. High 82°, low 65°.

Pressure29.80 inHg
Wind10 mph S
Humidity74%
Visibility6.2 mi
Dew point72°
Wed, 1283° / 62°0Clear
83 °Clear

Crystal Lake, Wednesday, 12 August

Clear. High 83°, low 62°.

Pressure29.85 inHg
Wind3.8 mph N
Humidity65%
Visibility6.2 mi
Dew point67°
Thu, 1372° / 61°0.07Light rain
72 °Light rain

Crystal Lake, Thursday, 13 August

Light rain. High 72°, low 61°.

Pressure29.97 inHg
Wind8.1 mph E
Humidity78%
Visibility—
Dew point63°
Fri, 1472° / 58°0Overcast
72 °Overcast

Crystal Lake, Friday, 14 August

Overcast. High 72°, low 58°.

Pressure30.15 inHg
Wind14.8 mph E
Humidity57%
Visibility—
Dew point54°
Sat, 1575° / 60°0.06Light rain
75 °Light rain

Crystal Lake, Saturday, 15 August

Light rain. High 75°, low 60°.

Pressure30.21 inHg
Wind12.5 mph SE
Humidity57%
Visibility—
Dew point56°
Sun, 1673° / 64°0.21Light rain
73 °Light rain

Crystal Lake, Sunday, 16 August

Light rain. High 73°, low 64°.

Pressure30.00 inHg
Wind12.2 mph NW
Humidity84%
Visibility—
Dew point65°
Mon, 1776° / 60°0Overcast
76 °Overcast

Crystal Lake, Monday, 17 August

Overcast. High 76°, low 60°.

Pressure30.12 inHg
Wind7.8 mph N
Humidity61%
Visibility—
Dew point57°
Tue, 1876° / 58°0Overcast
76 °Overcast

Crystal Lake, Tuesday, 18 August

Overcast. High 76°, low 58°.

Pressure29.91 inHg
Wind10 mph S
Humidity84%
Visibility—
Dew point59°
Wed, 1973° / 61°0.01Light rain
73 °Light rain

Crystal Lake, Wednesday, 19 August

Light rain. High 73°, low 61°.

Pressure29.83 inHg
Wind13.9 mph NW
Humidity74%
Visibility—
Dew point62°
Thu, 2074° / 58°0.13Light rain
74 °Light rain

Crystal Lake, Thursday, 20 August

Light rain. High 74°, low 58°.

Pressure29.94 inHg
Wind7.1 mph SE
Humidity78%
Visibility—
Dew point62°
Fri, 2178° / 59°0.17Rain
78 °Rain

Crystal Lake, Friday, 21 August

Rain. High 78°, low 59°.

Pressure29.77 inHg
Wind16.2 mph S
Humidity69%
Visibility—
Dew point62°
Sat, 2279° / 62°0.02Light rain
79 °Light rain

Crystal Lake, Saturday, 22 August

Light rain. High 79°, low 62°.

Pressure29.80 inHg
Wind15.1 mph NW
Humidity52%
Visibility—
Dew point58°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Crystal Lake, IL, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.