Currently: 73 °F. Low clouds. (Weather station: Southern Illinois Airport, USA). See more current weatherCity of Harrisburg Extended Forecast with high and low temperatures
°F
Time
Wind
(mph)
(mph)
Rain/Snow
()
()
Temp
(°F)
(°F)
66
69
72
75
78
81
84
87
90
93
Jun 15 – Jun 21
0.04
Lo:70
Tue, 17
Hi:85
5
0.69
Lo:71
Wed, 18
Hi:87
18
0.5
Lo:70
Thu, 19
Hi:85
7
Lo:67
Fri, 20
Hi:89
10
Lo:68
Sat, 21
Hi:92
13
Jun 22 – Jun 28
Lo:74
Sun, 22
Hi:93
10
Lo:73
Mon, 23
Hi:91
7
Lo:73
Tue, 24
Hi:90
4
Lo:71
Wed, 25
Hi:87
6
Lo:70
Thu, 26
Hi:87
7
Lo:70
Fri, 27
Hi:86
6
0.09
Lo:70
Sat, 28
Hi:88
9
Jun 29 – Jul 5
0.12
Lo:70
Sun, 29
Hi:88
11
0.18
Lo:71
Mon, 30
Hi:88
5
1.12
Lo:70
Tue, 1
Hi:85
9
Tue, Jun 17
85 / 70 °F
Isolated tstorms late. Cloudy.
Feels Like: 89 °F
Humidity: 70%
Precipitation: Rain: 0.04 Snow: 0
Precipitation Chance: 21%
SSW
Wind: 5 mph
2 Week Extended Forecast in City of Harrisburg, Illinois, USA
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Tue Jun 17 |  | 85 / 70 °F | Isolated tstorms late. Cloudy. | 89 °F | 5 mph | ↑ | 70% | 21% | 0.04" | 5 (Moderate) | 5:32 am | 8:18 pm |
| Wed Jun 18 |  | 87 / 71 °F | Thunderstorms. Mostly cloudy. | 93 °F | 18 mph | ↑ | 71% | 80% | 0.69" | 5 (Moderate) | 5:32 am | 8:18 pm |
| Thu Jun 19 |  | 85 / 70 °F | Strong thunderstorms. Morning clouds. | 87 °F | 7 mph | ↑ | 60% | 70% | 0.50" | 10 (Very high) | 5:32 am | 8:18 pm |
| Fri Jun 20 |  | 89 / 67 °F | Sunny. | 92 °F | 10 mph | ↑ | 52% | 0% | 0.00" | 10 (Very high) | 5:32 am | 8:19 pm |
| Sat Jun 21 | | 92 / 68 °F | Sunny. | 99 °F | 13 mph | ↑ | 55% | 0% | 0.00" | 10 (Very high) | 5:32 am | 8:19 pm |
| Sun Jun 22 | | 93 / 74 °F | Sunny. | 101 °F | 10 mph | ↑ | 55% | 3% | 0.00" | 10 (Very high) | 5:32 am | 8:19 pm |
| Mon Jun 23 | | 91 / 73 °F | Sunny. | 99 °F | 7 mph | ↑ | 58% | 7% | 0.00" | 10 (Very high) | 5:33 am | 8:19 pm |
| Tue Jun 24 |  | 90 / 73 °F | Mostly sunny. | 90 °F | 4 mph | ↑ | 55% | 6% | 0.00" | 5 (Moderate) | 5:33 am | 8:19 pm |
| Wed Jun 25 |  | 87 / 71 °F | Partly cloudy. | 91 °F | 6 mph | ↑ | 56% | 4% | 0.00" | 5 (Moderate) | 5:33 am | 8:19 pm |
| Thu Jun 26 | | 87 / 70 °F | Sunny. | 90 °F | 7 mph | ↑ | 54% | 5% | 0.00" | 10 (Very high) | 5:34 am | 8:20 pm |
| Fri Jun 27 | | 86 / 70 °F | Mostly sunny. | 89 °F | 6 mph | ↑ | 53% | 5% | 0.00" | 10 (Very high) | 5:34 am | 8:20 pm |
| Sat Jun 28 | | 88 / 70 °F | Isolated tstorms late. Broken clouds. | 96 °F | 9 mph | ↑ | 64% | 88% | 0.09" | 10 (Very high) | 5:34 am | 8:20 pm |
| Sun Jun 29 | | 88 / 70 °F | A few tstorms. Mostly cloudy. | 102 °F | 11 mph | ↑ | 72% | 91% | 0.12" | 5 (Moderate) | 5:35 am | 8:20 pm |
| Mon Jun 30 | | 88 / 71 °F | Thundershowers. Overcast. | 102 °F | 5 mph | ↑ | 76% | 97% | 0.18" | 5 (Moderate) | 5:35 am | 8:19 pm |
| Tue Jul 1 | | 85 / 70 °F | Thunderstorms. Overcast. | 105 °F | 9 mph | ↑ | 98% | 83% | 1.12" | 3 (Moderate) | 5:36 am | 8:19 pm |
| * Updated Tuesday, June 17, 2025 3:04:48 am City of Harrisburg time - Weather by CustomWeather, © 2025 | ||||||||||||