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Clayton, MO

72°F
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Clayton, 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
Flood Watch

July

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
28
Mostly sunny and humid
95°
74°
29
Sunshine and hot
96°
75°
30
Hazy and toasty conditions
98°
76°
1
Hot with hazy sun
98°
77°
2
Sunshine and hot
98°
76°
3
Hot; a p.m. t-storm or two
96°
78°
4
A shower possible; hot, humid
94°
75°
5
Humid with a stray t-storm
92°
76°
6
A little afternoon rain
94°
73°
7
Partly sunny, a shower; humid
90°
72°
8
Partly sunny
92°
72°
9
Sunshine
89°
71°
10
Mostly sunny
93°
75°
11
Mostly cloudy and humid
93°
74°
12
A t-storm around in the p.m.
91°
74°
13
Plenty of sun
91°
73°
14
Sunny
92°
74°
15
Plenty of sunshine
92°
74°
16
Sunshine
91°
75°
17
Brilliant sunshine
93°
76°
18
Sunny and hot
94°
76°
19
A t-storm in the afternoon
93°
75°
20
More clouds than sunshine
92°
76°
21
Hot with sunny spells
93°
77°
22
Cloudy and toasty conditions
93°
76°
23
Cloudy and toasty conditions
94°
77°
24
A shower and thunderstorm
92°
76°
25
Mostly cloudy
91°
75°
26
Mostly sunny
93°
77°
27
Sunshine and hot
95°
77°
28
Mostly sunny and hot
95°
76°
29
Mostly sunny, hot and humid
94°
77°
30
Mostly sunny, hot and humid
94°
76°
31
A t-storm around in the p.m.
93°
76°
1
Decreasing clouds and humid
93°
77°

Temperature Graph

°F
100° 92° 84° 76° 68° Jul
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

July Weather in Clayton

Clayton's July 2026 forecast shows daily high temperatures ranging from 89° to 98°, with overnight lows between 71° and 78°. The average high for July is 93° with an average low of 75°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Clayton. See also: August | September | October.

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Weather Near Clayton:

  • O'Fallon, MO
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