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Grand Crossing, IL

77°F
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Grand Crossing

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77°
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Grand Crossing, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

August

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
26
Humid with some sun
83°
73°
27
Partly sunny and humid
86°
74°
28
Lots of sun; warm, humid
87°
73°
29
Humid with sunny spells
86°
72°
30
Partly sunny and less humid
85°
71°
31
Mostly cloudy
79°
71°
1
A bit of afternoon rain
82°
72°
2
Partly sunny and very humid
86°
74°
3
Mostly sunny, warm and humid
88°
74°
4
Sunny, warm and very humid
88°
73°
5
Sunny, warm and less humid
87°
72°
6
Mostly sunny and warm
86°
73°
7
Humid with sunshine
83°
71°
8
Mostly sunny and humid
83°
68°
9
An afternoon t-storm or two
82°
64°
10
Clouds and sun; less humid
78°
65°
11
Mostly sunny
79°
66°
12
Periods of clouds and sun
78°
64°
13
More clouds than sun
78°
64°
14
An afternoon shower
79°
65°
15
Morning rain, then a shower
77°
68°
16
Partly sunny and humid
78°
69°
17
A shower and thunderstorm
84°
67°
18
Humid with clouds and sun
78°
65°
19
Mostly cloudy and humid
78°
63°
20
Humid with decreasing clouds
80°
65°
21
Mostly sunny
81°
67°
22
A shower and t-storm; humid
81°
68°
23
Humid with partial sunshine
84°
70°
24
Humid with some sun
84°
71°
25
Humid with a t-storm or two
85°
71°
26
Humid with a t-storm or two
86°
70°
27
Some sun with a stray t-storm
85°
62°
28
Sunshine and less humid
81°
62°
29
Partly sunny; low humidity
77°
64°
30
A morning shower, then rain
76°
62°
31
Clouds and sun, a few showers
77°
61°
1
Sunshine and a few clouds
76°
62°
2
Periods of clouds and sun
75°
60°
3
Partly sunny
75°
59°
4
Mostly sunny
76°
61°
5
Sunshine
78°
65°

Temperature Graph

°F
90° 84° 78° 72° 66° Aug
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

August Weather in Grand Crossing

Grand Crossing's August 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 59° and 74°. The average high for August is 81° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Grand Crossing. See also: September | October | November.

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Weather Near Grand Crossing:

  • Chicago, IL
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