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St. Augustine, IL

48°F
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St. Augustine

Illinois

48°
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St. Augustine, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today WinterCast Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

April

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
29
61°
41°
30
83°
48°
31
80°
51°
1
51°
38°
2
73°
42°
3
66°
44°
4
51°
40°
5
54°
33°
6
Mostly sunny and breezy
55°
33°
7
Mostly cloudy and chilly
47°
39°
8
Partly sunny; windy, warmer
70°
53°
9
Rather cloudy, showers around
71°
49°
10
Some rain and a thunderstorm
66°
45°
11
Pleasant with clouds and sun
66°
50°
12
Mostly cloudy and warmer
77°
57°
13
Cloudy, heavy t-storms; warm
76°
54°
14
Some rain and a thunderstorm
69°
41°
15
Mostly sunny
66°
43°
16
Sunny to partly cloudy
59°
36°
17
Mostly cloudy
65°
39°
18
Cloudy
67°
41°
19
Decreasing clouds
63°
38°
20
Cloudy
68°
45°
21
Rain
67°
47°
22
Rain tapering off
67°
45°
23
Turning cloudy
68°
43°
24
Mostly sunny
68°
38°
25
Rain becoming steadier
62°
45°
26
Times of clouds and sun
59°
45°
27
Mostly sunny
65°
44°
28
Partly sunny
70°
43°
29
Cloudy
63°
38°
30
Increasing amounts of sun
63°
42°
1
Cloudy
67°
45°
2
Plenty of sunshine
64°
40°

Temperature Graph

°F
80° 70° 60° 50° 40° Apr
Today 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
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

April Weather in St. Augustine

St. Augustine's April 2026 forecast shows daily high temperatures ranging from 47° to 77°, with overnight lows between 33° and 57°. The average high for April is 65° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in St. Augustine. See also: May | June | July.

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World North America United States Illinois St. Augustine

Weather Near St. Augustine:

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  • Moline, IL
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