Currently: 62 °F. Heavy rain. Fog. (Weather station: Washington County Regional Airport, USA). See more current weatherMercersburg Extended Forecast with high and low temperatures
°F
Time
Wind
(mph)
(mph)
Rain/Snow
()
()
Temp
(°F)
(°F)
39
43
47
51
55
59
63
67
71
75
May 4 – May 10
0.85
Lo:61
Sun, 4
Hi:74
13
0.49
Lo:62
Mon, 5
Hi:75
9
0.31
Lo:54
Tue, 6
Hi:70
8
0.01
Lo:52
Wed, 7
Hi:77
7
0.06
Lo:48
Thu, 8
Hi:68
10
Lo:40
Fri, 9
Hi:69
3
Lo:42
Sat, 10
Hi:74
3
May 11 – May 17
Lo:50
Sun, 11
Hi:72
4
Lo:56
Mon, 12
Hi:75
5
Lo:58
Tue, 13
Hi:75
2
Lo:58
Wed, 14
Hi:75
8
0.25
Lo:58
Thu, 15
Hi:76
6
0.02
Lo:60
Fri, 16
Hi:77
12
Lo:56
Sat, 17
Hi:75
5
May 18 – May 24
Lo:55
Sun, 18
Hi:75
5
2 Week Extended Forecast in Mercersburg, Pennsylvania, USA
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Sun May 4 |  | 74 / 61 °F | Isolated tstorms. Cloudy. | 72 °F | 13 mph | ↑ | 77% | 99% | 0.85" | 3 (Moderate) | 6:08 am | 8:09 pm |
| Mon May 5 |  | 75 / 62 °F | Passing showers. Cloudy. | 76 °F | 9 mph | ↑ | 66% | 72% | 0.49" | 3 (Moderate) | 6:06 am | 8:10 pm |
| Tue May 6 | | 70 / 54 °F | Passing showers. Cloudy. | 69 °F | 8 mph | ↑ | 52% | 74% | 0.31" | 3 (Moderate) | 6:05 am | 8:11 pm |
| Wed May 7 |  | 77 / 52 °F | Overcast. | 78 °F | 7 mph | ↑ | 41% | 18% | 0.01" | 3 (Moderate) | 6:04 am | 8:12 pm |
| Thu May 8 | | 68 / 48 °F | Passing showers. Overcast. | 65 °F | 10 mph | ↑ | 69% | 21% | 0.06" | 3 (Moderate) | 6:03 am | 8:13 pm |
| Fri May 9 | | 69 / 40 °F | Cloudy. | 68 °F | 3 mph | ↑ | 35% | 0% | - | 5 (Moderate) | 6:02 am | 8:14 pm |
| Sat May 10 |  | 74 / 42 °F | Sunny. | 77 °F | 3 mph | ↑ | 36% | 0% | - | 7 (High) | 6:01 am | 8:15 pm |
| Sun May 11 | | 72 / 50 °F | Sunny. | 76 °F | 4 mph | ↑ | 55% | 4% | - | 7 (High) | 6:00 am | 8:16 pm |
| Mon May 12 |  | 75 / 56 °F | Afternoon clouds. | 77 °F | 5 mph | ↑ | 57% | 4% | - | 5 (Moderate) | 5:59 am | 8:17 pm |
| Tue May 13 | | 75 / 58 °F | Sunny. | 77 °F | 2 mph | ↑ | 51% | 4% | - | 7 (High) | 5:58 am | 8:18 pm |
| Wed May 14 | | 75 / 58 °F | Sunny. | 77 °F | 8 mph | ↑ | 54% | 4% | - | 7 (High) | 5:57 am | 8:18 pm |
| Thu May 15 |  | 76 / 58 °F | Tstorms late. Broken clouds. | 77 °F | 6 mph | ↑ | 59% | 93% | 0.25" | 5 (Moderate) | 5:56 am | 8:19 pm |
| Fri May 16 | | 77 / 60 °F | Isolated tstorms late. Broken clouds. | 79 °F | 12 mph | ↑ | 57% | 40% | 0.02" | 5 (Moderate) | 5:55 am | 8:20 pm |
| Sat May 17 | | 75 / 56 °F | Morning clouds. | 77 °F | 5 mph | ↑ | 43% | 6% | - | 7 (High) | 5:54 am | 8:21 pm |
| Sun May 18 |  | 75 / 55 °F | Scattered clouds. | 77 °F | 5 mph | ↑ | 53% | 4% | - | 7 (High) | 5:53 am | 8:22 pm |
| * Updated Saturday, May 3, 2025 11:24:12 pm Mercersburg time - Weather by CustomWeather, © 2025 | ||||||||||||