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Troy, MO

76°F
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76°
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Troy, MO 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
2
Flood Watch

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
Plenty of sunshine
85°
63°
27
Sunshine and a few clouds
85°
64°
28
Mostly sunny
86°
64°
29
Mostly sunny
86°
69°
30
Mostly sunny
90°
66°
31
Mostly cloudy
89°
69°
1
Sunny
91°
69°
2
Couple of thunderstorms
88°
68°
3
A shower and t-storm; humid
86°
69°
4
Showers around in the p.m.
91°
67°
5
Humid; an afternoon t-shower
90°
62°
6
Mostly cloudy and less humid
84°
62°
7
Mostly sunny; low humidity
83°
63°
8
A blend of sun and clouds
83°
63°
9
Clouds and sun
84°
64°
10
Cloudy
83°
63°
11
Partly sunny
85°
63°
12
Plenty of sun
88°
65°
13
Sunny
90°
67°
14
Mostly sunny
90°
68°
15
Couple of thunderstorms
90°
66°
16
Humid with clouds and sun
90°
66°
17
Humid with a t-storm or two
89°
61°
18
A shower and t-storm; humid
84°
60°
19
Mostly sunny and less humid
83°
64°
20
Mostly sunny
84°
65°
21
An afternoon t-storm or two
88°
66°
22
Humid with thunderstorms
83°
60°
23
Decreasing clouds and humid
85°
67°
24
Mostly sunny and humid
87°
68°
25
Mostly sunny and hot
90°
66°
26
Mostly sunny and hot
90°
66°
27
Humid with some sun
88°
67°
28
Partly sunny and less humid
89°
67°
29
Sunny and very warm
89°
66°
30
Mostly sunny
88°
67°
31
Mostly sunny
87°
63°
1
Sunshine and a few clouds
85°
62°
2
Mostly sunny
86°
61°
3
Sunshine and some clouds
85°
62°
4
Humid with a t-storm or two
86°
63°
5
Partly sunny
85°
63°

Temperature Graph

°F
100° 90° 80° 70° 60° 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 Troy

Troy's August 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 60° and 69°. The average high for August is 87° with an average low of 65°. 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 Troy. See also: September | October | November.

Further Ahead

September 2026

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Weather Near Troy:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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