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Washington, MO

66°F
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Washington, 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

October

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
27
77°
61°
28
81°
55°
29
86°
52°
30
Hot with periods of sun
93°
72°
1
Not as hot; a p.m. t-storm
83°
64°
2
Some rain and a thunderstorm
75°
49°
3
Nice with partial sunshine
74°
46°
4
Nice with plenty of sunshine
74°
50°
5
Sunny
69°
44°
6
Mostly cloudy
72°
44°
7
Mostly sunny
73°
51°
8
Partly sunny
76°
50°
9
A little rain in the morning
75°
48°
10
Plenty of sunshine
74°
50°
11
Plenty of sun
74°
52°
12
Plenty of sun
71°
49°
13
Becoming cloudy
70°
43°
14
Plenty of sunshine
63°
40°
15
Cloudy
63°
43°
16
Sun, then clouds
72°
49°
17
Mostly cloudy
74°
50°
18
Mostly sunny
74°
48°
19
Sunshine and a few clouds
65°
43°
20
Mostly cloudy
61°
39°
21
Plenty of sunshine
59°
36°
22
Mostly sunny
60°
43°
23
Rather cloudy and warmer
71°
48°
24
Cloudy
71°
47°
25
Mostly cloudy
70°
46°
26
Plenty of sunshine
64°
40°
27
Plenty of sunshine
60°
39°
28
Decreasing clouds
67°
43°
29
Plenty of sunshine
64°
39°
30
Becoming cloudy
63°
43°
31
Sunshine and a few clouds
68°
44°

Temperature Graph

°F
90° 78° 66° 54° 42° Oct
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

October Weather in Washington

Washington's October 2026 forecast shows daily high temperatures ranging from 59° to 93°, with overnight lows between 36° and 72°. The average high for October is 70° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Washington. See also: November | December | January.

Further Ahead

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Weather Near Washington:

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