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Peru, IL

73°F
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Peru

Illinois

73°
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Peru, 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
Sunshine and a few clouds
90°
75°
27
A stray t-storm; hot, humid
93°
72°
28
Mostly sunny, hot and humid
91°
62°
29
Sunny and less humid
86°
61°
30
Some rain and a thunderstorm
84°
66°
31
An afternoon t-storm; humid
86°
67°
1
Some sun, warm; a p.m. shower
88°
64°
2
Sunshine
85°
63°
3
Humid with plenty of sunshine
84°
64°
4
Humid with plenty of sunshine
86°
62°
5
Humid with clouds; p.m. rain
85°
63°
6
A little morning rain
83°
61°
7
A shower and thunderstorm
84°
64°
8
Humid with sunshine
85°
66°
9
A shower and thunderstorm
84°
65°
10
A couple of morning showers
85°
66°
11
Cloudy and humid; p.m. rain
80°
66°
12
A shower and thunderstorm
82°
65°
13
Sunny and less humid
83°
64°
14
Mostly cloudy
78°
60°
15
Humid; afternoon t-storms
79°
65°
16
A shower and thunderstorm
81°
65°
17
Humid with sun, then clouds
82°
64°
18
A little afternoon rain
78°
64°
19
Humid with decreasing clouds
77°
65°
20
Mostly sunny and humid
81°
64°
21
Mostly cloudy
78°
62°
22
Partly sunny and humid
82°
65°
23
Sunny, warm and humid
86°
64°
24
Partly sunny and less humid
85°
63°
25
Plenty of sun
82°
64°
26
Mostly sunny, warm and humid
86°
66°
27
A shower and thunderstorm
86°
65°
28
Mostly cloudy and less humid
85°
65°
29
Warm with some sun
85°
64°
30
Cloudy, thunderstorms; humid
82°
63°
31
Sun, then clouds; less humid
76°
59°
1
Partly sunny
76°
58°
2
Cloudy
77°
62°
3
Cloudy
77°
63°
4
Cloudy, humid; p.m. t-storms
80°
63°
5
A shower and t-storm; humid
81°
62°

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 Peru

Peru's August 2026 forecast shows daily high temperatures ranging from 76° to 93°, with overnight lows between 58° and 75°. The average high for August is 83° with an average low of 64°. 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 Peru. See also: September | October | November.

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