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Oconee, IL

73°F
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Oconee

Illinois

73°
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Oconee, 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
Blowing Dust Advisory

May

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
79°
50°
27
66°
57°
28
63°
54°
29
61°
45°
30
64°
39°
1
57°
43°
2
57°
43°
3
72°
43°
4
A shower and t-storm; breezy
76°
55°
5
Rain and a t-storm; cooler
60°
46°
6
Cloudy and cool
59°
42°
7
Cool with periods of sun
62°
45°
8
Clouds, a shower
70°
49°
9
Some sun with showers around
72°
50°
10
A.M. downpours, then a shower
66°
46°
11
Sunshine and a few clouds
68°
49°
12
Plenty of sunshine
69°
50°
13
Rain and a thunderstorm
70°
53°
14
Plenty of sun
71°
48°
15
Plenty of sunshine
72°
52°
16
A morning t-storm or two
74°
55°
17
Cloudy, a shower and t-storm
77°
53°
18
Partly sunny with a shower
73°
57°
19
Some sun, a t-shower in spots
77°
56°
20
Sunny and less humid
74°
52°
21
A passing afternoon shower
76°
51°
22
Mostly sunny
70°
49°
23
Mostly sunny
70°
49°
24
Partial sunshine
71°
50°
25
Rain becoming steadier
70°
50°
26
Mostly sunny
70°
51°
27
Sunny to partly cloudy
72°
51°
28
Cloudy
73°
55°
29
Periods of sunshine
74°
55°
30
Cloudy
77°
61°
31
Rain becoming steadier; humid
75°
59°
1
Mostly sunny and less humid
75°
54°
2
Sunny
76°
56°
3
Sun followed by clouds
77°
59°
4
Sunshine and some clouds
78°
62°
5
A shower and thunderstorm
79°
63°
6
Cloudy and humid
80°
64°

Temperature Graph

°F
80° 72° 64° 56° 48° May
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 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

May Weather in Oconee

Oconee's May 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 42° and 64°. The average high for May is 72° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Oconee. See also: June | July | August.

Further Ahead

June 2026

July 2026

August 2026

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World North America United States Illinois Oconee

Weather Near Oconee:

  • Champaign, IL
  • Decatur, IL
  • Springfield, IL
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