Decatur (United States of America) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: -4° Celsius; Minimum nighttime temperature: -9° Celsius;
Maximum daytime temperature: -4 degrees Celsius; Minimum nighttime temperature: -9 degrees Celsius; -
Maximum daytime temperature: -2° Celsius; Minimum nighttime temperature: -4° Celsius;
Maximum daytime temperature: -2 degrees Celsius; Minimum nighttime temperature: -4 degrees Celsius; -
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 4° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius;
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 5° Celsius;
Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius;
-
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
-
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 6° Celsius;
Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius;
-
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 0° Celsius;
Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 0 degrees Celsius;
Light snow changing to overcast by late morning.
Sunrise:
Sunset:
M UV
No pollution data.
No pollen data.
7 day forecast for Decatur
Today (16 March 2026)
| Time |
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
 |
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
30%
|
40%
|
60%
|
80%
|
40%
|
20%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
-1°
|
-2°
|
-2°
|
-2°
|
-4°
|
-4°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-4°
|
-5°
|
-5°
|
-5°
|
-6°
|
-6°
|
-6°
|
-7°
|
-7°
|
-8°
|
| Feels like temperature (°C) |
-9°
|
-9°
|
-9°
|
-10°
|
-12°
|
-13°
|
-14°
|
-14°
|
-14°
|
-13°
|
-13°
|
-12°
|
-13°
|
-13°
|
-14°
|
-14°
|
-14°
|
-14°
|
-15°
|
-16°
|
-16°
|
| Wind direction and speed |
WNW
20
|
WNW
20
|
WNW
20
|
WNW
20
|
WNW
21
|
WNW
22
|
WNW
22
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
20
|
WNW
19
|
WNW
19
|
WNW
17
|
WNW
17
|
WNW
17
|
WNW
17
|
WNW
17
|
| Wind gust (mph) |
36
|
36
|
36
|
38
|
39
|
39
|
40
|
39
|
39
|
39
|
39
|
38
|
37
|
36
|
34
|
33
|
31
|
31
|
30
|
30
|
30
|
| Visibility |
M
|
M
|
M
|
P
|
P
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
85%
|
86%
|
86%
|
87%
|
87%
|
76%
|
71%
|
70%
|
69%
|
67%
|
63%
|
59%
|
65%
|
67%
|
71%
|
67%
|
66%
|
65%
|
65%
|
64%
|
63%
|
| UV | - | - | - | - | - | 1 | 1 | 2 | 2 | 3 | 4 | 2 | 2 | 1 | 1 | - | - | - | - | - | - |
Tuesday (17 March 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
 |
 |
|
|
|
|
|
|
|
 |
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
20%
|
40%
|
| Temperature (°C) |
-8°
|
-9°
|
-9°
|
-9°
|
-9°
|
-9°
|
-9°
|
-9°
|
-8°
|
-8°
|
-7°
|
-6°
|
-5°
|
-4°
|
-3°
|
-3°
|
-2°
|
-2°
|
-2°
|
-3°
|
-2°
|
-2°
|
-2°
|
-2°
|
| Feels like temperature (°C) |
-17°
|
-17°
|
-17°
|
-18°
|
-17°
|
-17°
|
-17°
|
-16°
|
-16°
|
-15°
|
-14°
|
-12°
|
-11°
|
-9°
|
-8°
|
-7°
|
-6°
|
-6°
|
-6°
|
-6°
|
-6°
|
-6°
|
-6°
|
-7°
|
| Wind direction and speed (mph) |
NW
17
|
NW
16
|
NW
16
|
NW
16
|
NW
15
|
NW
14
|
NW
14
|
NW
13
|
NW
12
|
NW
12
|
NW
11
|
NW
10
|
WNW
9
|
WNW
8
|
WNW
8
|
W
7
|
WSW
6
|
WSW
6
|
SW
6
|
SSW
6
|
S
6
|
S
7
|
S
8
|
S
9
|
| Wind gust (mph) |
29
|
29
|
29
|
28
|
28
|
26
|
25
|
24
|
23
|
23
|
22
|
21
|
20
|
19
|
18
|
16
|
15
|
13
|
12
|
11
|
12
|
14
|
17
|
19
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
61%
|
59%
|
57%
|
55%
|
54%
|
52%
|
48%
|
44%
|
43%
|
42%
|
41%
|
41%
|
40%
|
39%
|
39%
|
39%
|
39%
|
39%
|
40%
|
41%
|
43%
|
45%
|
50%
|
58%
|
| UV | - | - | - | - | - | - | - | - | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 3 | 2 | 1 | - | - | - | - | - | - |
Wednesday (18 March 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
| Chance of precipitation |
70%
|
80%
|
80%
|
60%
|
60%
|
50%
|
40%
|
30%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
-3°
|
-4°
|
-3°
|
-3°
|
-2°
|
-2°
|
-1°
|
-1°
|
0°
|
1°
|
2°
|
4°
|
7°
|
9°
|
11°
|
12°
|
13°
|
13°
|
12°
|
10°
|
8°
|
7°
|
7°
|
6°
|
| Feels like temperature (°C) |
-8°
|
-10°
|
-10°
|
-9°
|
-8°
|
-8°
|
-7°
|
-6°
|
-5°
|
-4°
|
-3°
|
-1°
|
3°
|
6°
|
8°
|
10°
|
11°
|
11°
|
11°
|
8°
|
7°
|
6°
|
5°
|
4°
|
| Wind direction and speed (mph) |
S
10
|
S
12
|
SSE
12
|
SSE
12
|
SSE
13
|
S
13
|
S
13
|
S
13
|
S
13
|
S
12
|
S
12
|
S
12
|
S
12
|
SSW
12
|
SSW
12
|
SW
11
|
SW
10
|
SW
9
|
SW
7
|
SW
6
|
SSW
6
|
SSW
6
|
SSW
6
|
SSW
6
|
| Wind gust (mph) |
21
|
22
|
23
|
23
|
23
|
23
|
23
|
23
|
23
|
22
|
23
|
23
|
23
|
23
|
22
|
20
|
18
|
15
|
10
|
8
|
8
|
8
|
9
|
10
|
| Visibility (description) |
M
|
VP
|
P
|
P
|
P
|
P
|
M
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
80%
|
96%
|
96%
|
97%
|
96%
|
95%
|
91%
|
87%
|
84%
|
82%
|
76%
|
72%
|
63%
|
57%
|
55%
|
54%
|
54%
|
55%
|
66%
|
78%
|
83%
|
85%
|
87%
|
87%
|
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 3 | 4 | 5 | 5 | 4 | 3 | 2 | 1 | - | - | - | - | - | - |
Thursday (19 March 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
6°
|
6°
|
6°
|
6°
|
5°
|
5°
|
5°
|
5°
|
6°
|
7°
|
10°
|
12°
|
13°
|
15°
|
15°
|
16°
|
17°
|
16°
|
15°
|
13°
|
12°
|
11°
|
10°
|
9°
|
| Feels like temperature (°C) |
4°
|
4°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
4°
|
6°
|
9°
|
11°
|
12°
|
13°
|
14°
|
14°
|
15°
|
15°
|
14°
|
12°
|
11°
|
9°
|
8°
|
7°
|
| Wind direction and speed (mph) |
SSW
6
|
SSW
7
|
SSW
6
|
SSW
6
|
SSW
6
|
SSW
6
|
SSW
6
|
SSW
6
|
SW
5
|
WSW
5
|
NW
6
|
NNW
6
|
N
7
|
N
8
|
N
8
|
NNE
9
|
N
8
|
NNE
8
|
NNE
7
|
NNE
7
|
NE
6
|
NE
7
|
NE
7
|
ENE
7
|
| Wind gust (mph) |
10
|
10
|
10
|
10
|
10
|
10
|
9
|
9
|
10
|
10
|
12
|
14
|
16
|
17
|
18
|
18
|
17
|
15
|
12
|
11
|
11
|
12
|
11
|
11
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
| Humidity |
88%
|
89%
|
89%
|
90%
|
90%
|
91%
|
91%
|
92%
|
91%
|
86%
|
82%
|
75%
|
69%
|
66%
|
62%
|
59%
|
58%
|
59%
|
65%
|
75%
|
81%
|
84%
|
85%
|
86%
|
| UV | - | - | - | - | - | - | - | - | 1 | 2 | 3 | 4 | 5 | 5 | 4 | 3 | 2 | 1 | - | - | - | - | - | - |
Friday (20 March 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
8°
|
7°
|
7°
|
6°
|
6°
|
5°
|
5°
|
5°
|
6°
|
8°
|
11°
|
14°
|
16°
|
18°
|
20°
|
21°
|
21°
|
21°
|
20°
|
18°
|
15°
|
| Feels like temperature (°C) |
6°
|
6°
|
5°
|
4°
|
4°
|
3°
|
3°
|
3°
|
5°
|
6°
|
9°
|
12°
|
14°
|
16°
|
17°
|
17°
|
18°
|
18°
|
17°
|
16°
|
14°
|
| Wind direction and speed (mph) |
E
6
|
E
6
|
ESE
6
|
ESE
6
|
ESE
5
|
SE
6
|
SSE
6
|
SSE
6
|
S
6
|
S
7
|
SSW
7
|
SSW
9
|
SW
11
|
SW
11
|
SW
13
|
SW
13
|
SW
13
|
SW
13
|
SW
11
|
SW
10
|
SW
10
|
| Wind gust (mph) |
11
|
10
|
9
|
9
|
10
|
10
|
10
|
10
|
11
|
15
|
18
|
20
|
22
|
23
|
25
|
25
|
24
|
21
|
18
|
18
|
18
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
89%
|
90%
|
91%
|
92%
|
93%
|
93%
|
92%
|
93%
|
89%
|
84%
|
76%
|
71%
|
63%
|
57%
|
55%
|
53%
|
52%
|
54%
|
60%
|
66%
|
76%
|
| UV | - | - | - | - | - | - | - | - | 1 | 2 | 3 | 4 | 5 | 5 | 4 | 3 | 2 | 1 | - | - | - |
Saturday (21 March 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
14°
|
13°
|
12°
|
15°
|
19°
|
19°
|
16°
|
13°
|
| Feels like temperature (°C) |
12°
|
11°
|
10°
|
13°
|
17°
|
16°
|
14°
|
11°
|
| Wind direction and speed (mph) |
WSW
10
|
W
9
|
NW
9
|
WNW
10
|
WNW
11
|
WNW
12
|
W
10
|
W
10
|
| Wind gust (mph) |
17
|
17
|
20
|
22
|
22
|
22
|
18
|
19
|
| Visibility (description) |
G
|
G
|
G
|
G
|
VG
|
VG
|
G
|
G
|
| Humidity |
82%
|
88%
|
91%
|
74%
|
55%
|
46%
|
62%
|
70%
|
| UV | - | - | - | 3 | 5 | 2 | - | - |
Sunday (22 March 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
10°
|
8°
|
6°
|
10°
|
13°
|
12°
|
9°
|
6°
|
| Feels like temperature (°C) |
8°
|
5°
|
3°
|
7°
|
10°
|
9°
|
7°
|
3°
|
| Wind direction and speed (mph) |
WNW
10
|
NW
10
|
N
10
|
N
12
|
N
11
|
NNE
11
|
NNE
10
|
NE
11
|
| Wind gust (mph) |
18
|
19
|
23
|
25
|
24
|
26
|
22
|
22
|
| Visibility (description) |
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
72%
|
73%
|
78%
|
60%
|
46%
|
43%
|
56%
|
65%
|
| UV | - | - | - | 3 | 5 | 2 | - | - |
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Forecast
Forecast for 4am (UTC-5) Monday
Updated 06:24 (UTC) on Mon 16 Mar 2026
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Nearest forecasts
- Springfield Capital 42.5 miles
- Bloomington - Central Illinois 45.0 miles
- Peoria Regional 72.1 miles
- Terre Haute - Hulman Field 87.6 miles
- Greater Kankakee 101 miles
- St Louis 109 miles
- St.Louis - Lambert International 109 miles
- Spirit of St. Louis 125 miles
- Quincy 133 miles
- Aurora Municipal 136 miles