Currently: 68 °F. Sunny. (Weather station: Southern Illinois Airport, USA). See more current weatherHarrisburg Extended Forecast with high and low temperatures
°F
Time
Wind
(mph)
(mph)
Rain/Snow
()
()
Temp
(°F)
(°F)
45
49
53
57
61
65
69
73
77
81
May 18 – May 24
1.08
Lo:64
Tue, 20
Hi:81
14
0.02
Lo:56
Wed, 21
Hi:74
12
Lo:52
Thu, 22
Hi:68
12
0.02
Lo:47
Fri, 23
Hi:72
5
0.22
Lo:57
Sat, 24
Hi:71
8
May 25 – May 31
0.7
Lo:51
Sun, 25
Hi:67
7
0.07
Lo:47
Mon, 26
Hi:60
11
Lo:46
Tue, 27
Hi:68
9
Lo:49
Wed, 28
Hi:72
5
0.01
Lo:53
Thu, 29
Hi:75
13
0.08
Lo:54
Fri, 30
Hi:75
13
0.03
Lo:61
Sat, 31
Hi:77
8
Jun 1 – Jun 7
Lo:61
Sun, 1
Hi:80
8
Lo:63
Mon, 2
Hi:81
6
Lo:63
Tue, 3
Hi:82
8
2 Week Extended Forecast in Harrisburg, Illinois, USA
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Tue May 20 |  | 81 / 64 °F | Strong thunderstorms. Mostly cloudy. | 83 °F | 14 mph | ↑ | 67% | 99% | 1.08" | 3 (Moderate) | 5:40 am | 8:01 pm |
| Wed May 21 |  | 74 / 56 °F | Showers late. Mostly sunny. | 77 °F | 12 mph | ↑ | 45% | 40% | 0.02" | 7 (High) | 5:39 am | 8:02 pm |
| Thu May 22 |  | 68 / 52 °F | Mostly sunny. | 67 °F | 12 mph | ↑ | 49% | 5% | - | 7 (High) | 5:38 am | 8:03 pm |
| Fri May 23 |  | 72 / 47 °F | Sprinkles late. Afternoon clouds. | 77 °F | 5 mph | ↑ | 48% | 46% | 0.02" | 7 (High) | 5:38 am | 8:03 pm |
| Sat May 24 |  | 71 / 57 °F | Rain late. Overcast. | 68 °F | 8 mph | ↑ | 76% | 57% | 0.22" | 3 (Moderate) | 5:37 am | 8:04 pm |
| Sun May 25 | | 67 / 51 °F | Rain early. Overcast. | 52 °F | 7 mph | ↑ | 96% | 80% | 0.70" | 3 (Moderate) | 5:37 am | 8:05 pm |
| Mon May 26 | | 60 / 47 °F | Sprinkles. Cloudy. | 57 °F | 11 mph | ↑ | 76% | 43% | 0.07" | 3 (Moderate) | 5:36 am | 8:06 pm |
| Tue May 27 |  | 68 / 46 °F | Morning clouds. | 68 °F | 9 mph | ↑ | 51% | 4% | - | 7 (High) | 5:36 am | 8:07 pm |
| Wed May 28 | | 72 / 49 °F | Sunny. | 77 °F | 5 mph | ↑ | 54% | 5% | - | 7 (High) | 5:35 am | 8:07 pm |
| Thu May 29 | | 75 / 53 °F | Showers early. Scattered clouds. | 77 °F | 13 mph | ↑ | 67% | 48% | 0.01" | 5 (Moderate) | 5:35 am | 8:08 pm |
| Fri May 30 |  | 75 / 54 °F | Scattered tstorms late. Cloudy. | 77 °F | 13 mph | ↑ | 69% | 54% | 0.08" | 5 (Moderate) | 5:34 am | 8:09 pm |
| Sat May 31 | | 77 / 61 °F | Showers early. Morning clouds. | 78 °F | 8 mph | ↑ | 58% | 41% | 0.03" | 7 (High) | 5:34 am | 8:09 pm |
| Sun Jun 1 | | 80 / 61 °F | Sunny. | 81 °F | 8 mph | ↑ | 52% | 5% | - | 7 (High) | 5:33 am | 8:10 pm |
| Mon Jun 2 | | 81 / 63 °F | Sunny. | 83 °F | 6 mph | ↑ | 57% | 4% | - | 7 (High) | 5:33 am | 8:11 pm |
| Tue Jun 3 | | 82 / 63 °F | Sunny. | 83 °F | 8 mph | ↑ | 53% | 5% | - | 7 (High) | 5:33 am | 8:11 pm |
| * Updated Tuesday, May 20, 2025 4:23:48 am Harrisburg time - Weather by CustomWeather, © 2025 | ||||||||||||