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Leaf River, IL

73°F
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Leaf River

Illinois

73°
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Leaf River, 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
Some rain and a thunderstorm
79°
58°
27
A thunderstorm in spots
80°
61°
28
Showers around in the morning
79°
58°
29
Humid with a t-storm or two
80°
58°
30
Humid with a few showers
81°
65°
31
Partly sunny and humid
87°
64°
1
Partly sunny and humid
87°
65°
2
Mostly sunny and humid
86°
64°
3
A couple of t-storms; humid
86°
65°
4
Couple of thunderstorms
85°
57°
5
Cloudy, thunderstorms; humid
80°
55°
6
Partly sunny and less humid
78°
55°
7
Partly sunny
78°
56°
8
Mostly sunny
79°
55°
9
Partly sunny
79°
55°
10
Sunny
80°
60°
11
Partly sunny and humid
80°
61°
12
Mostly sunny and humid
83°
62°
13
Partly sunny and humid
86°
63°
14
Mostly sunny and humid
85°
64°
15
Sunny and humid
87°
59°
16
A shower and t-storm; humid
86°
56°
17
Not as warm with morning rain
78°
55°
18
Mostly sunny
79°
55°
19
Plenty of sunshine
81°
57°
20
A little afternoon rain
78°
55°
21
A little morning rain
77°
57°
22
Humid with variable clouds
79°
55°
23
Mostly sunny and humid
82°
61°
24
Humid; a shower in the p.m.
84°
62°
25
Rather cloudy and humid
79°
54°
26
Couple of thunderstorms
81°
54°
27
Mostly sunny
80°
62°
28
An afternoon t-storm or two
78°
62°
29
Partly sunny and humid
85°
61°
30
A couple of t-storms; humid
84°
62°
31
A t-storm around in the p.m.
84°
59°
1
A shower and t-storm; humid
82°
60°
2
T-storms, mainly early; humid
83°
56°
3
Humid with a t-storm or two
81°
57°
4
Mainly cloudy and humid
76°
60°
5
Partly sunny and humid
83°
58°

Temperature Graph

°F
90° 82° 74° 66° 58° 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 Leaf River

Leaf River's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 54° and 65°. The average high for August is 82° with an average low of 59°. 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 Leaf River. See also: September | October | November.

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World North America United States Illinois Leaf River

Weather Near Leaf River:

  • Belvidere, IL
  • Freeport, IL
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