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10-Day Weather Forecast for Mercersburg, Pennsylvania 17236 - The Weather Channel | weather.com
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10 Day Weather-

As of 5:17 pm EDT
alertLevel2

Severe Thunderstorm Watch

alertLevel3

A Severe Thunderstorm Watch is in effect. Prepare to take shelter if necessary. Today's outlook: There is a likely risk of severe weather.

Tonight

Rain Rain/Thunder
--/51°
Rain drop 97%
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Night

51°
Rain
Rain drop
97%
NNW 14 mph

Scattered thunderstorms this evening, then cloudy with rain likely late. Low 51F. Winds NNW at 10 to 20 mph. Chance of rain 100%.

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  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:51 am
  • Moonset
    Moonset--
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Partly Cloudy Day AM Clouds/PM Sun/Wind
54°/30°
Rain drop 24%
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Day

54°
Partly Cloudy Day
Rain drop
24%
NW 20 mph

Becoming partly cloudy and windy. Slight chance of a rain shower. High 54F. Winds NW at 20 to 30 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:27 pm

Night

30°
Partly Cloudy Night
Mixed precipitation
2%
NW 17 mph

Partly cloudy skies. Low near 30F. Winds NW at 10 to 20 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:33 am
  • Moonset
    Moonset12:14 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Sunny Sunny
52°/34°
Rain drop 3%
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Day

52°
Sunny
Rain drop
3%
W 7 mph

Mainly sunny. High 52F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity42%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:08 am
  • Sunset
    Sunset7:28 pm

Night

34°
Partly Cloudy Night
Mixed precipitation
3%
S 6 mph

Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 34F. Winds light and variable.

  • Humidity
    Humidity51%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:24 am
  • Moonset
    Moonset1:29 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Partly Cloudy Day Partly Cloudy
61°/46°
Rain drop 3%
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Day

61°
Partly Cloudy Day
Rain drop
3%
S 12 mph

Intervals of clouds and sunshine. High 61F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity44%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:29 pm

Night

46°
Mostly Cloudy Night
Rain drop
16%
S 10 mph

Mostly cloudy skies. Low 46F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:27 am
  • Moonset
    Moonset2:36 am
  • Moon Phase - Day 7 First Quarter

Thu 26

Cloudy Cloudy
74°/55°
Rain drop 22%
Add

Day

74°
Cloudy
Rain drop
22%
SW 11 mph

Overcast. High 74F. Winds SW at 10 to 15 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:05 am
  • Sunset
    Sunset7:30 pm

Night

55°
Rain
Rain drop
78%
WSW 10 mph

Showers early, becoming a steady rain late. Low near 55F. Winds WSW at 5 to 10 mph. Chance of rain 80%. Rainfall around a quarter of an inch.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:37 pm
  • Moonset
    Moonset3:33 am
  • Moon Phase - Day 8 Waxing Gibbous

Fri 27

Partly Cloudy Day AM Clouds/PM Sun
58°/30°
Rain drop 24%
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Day

58°
Partly Cloudy Day
Rain drop
24%
NNW 13 mph

Cloudy early with partial sunshine expected late. High 58F. Winds NNW at 10 to 20 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:03 am
  • Sunset
    Sunset7:31 pm

Night

30°
Partly Cloudy Night
Mixed precipitation
9%
NNW 11 mph

A few clouds from time to time. Low around 30F. Winds NNW at 10 to 15 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:50 pm
  • Moonset
    Moonset4:17 am
  • Moon Phase - Day 9 Waxing Gibbous

Sat 28

Mostly Clear Day Mostly Sunny
50°/31°
Rain drop 3%
Add

Day

50°
Mostly Clear Day
Rain drop
3%
NW 11 mph

A few passing clouds, otherwise generally sunny. High around 50F. Winds NW at 10 to 15 mph.

  • Humidity
    Humidity38%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:02 am
  • Sunset
    Sunset7:32 pm

Night

31°
Mostly Clear Night
Mixed precipitation
3%
W 9 mph

Mainly clear. Low 31F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:03 pm
  • Moonset
    Moonset4:53 am
  • Moon Phase - Day 10 Waxing Gibbous

Sun 29

Mostly Clear Day Mostly Sunny
59°/41°
Rain drop 2%
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Day

59°
Mostly Clear Day
Rain drop
2%
SW 10 mph

Except for a few afternoon clouds, mainly sunny. High 59F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity42%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:00 am
  • Sunset
    Sunset7:33 pm

Night

41°
Partly Cloudy Night
Rain drop
8%
SW 7 mph

A few clouds from time to time. Low 41F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity51%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:13 pm
  • Moonset
    Moonset5:23 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Partly Cloudy Day Partly Cloudy
66°/48°
Rain drop 8%
Add

Day

66°
Partly Cloudy Day
Rain drop
8%
SW 10 mph

Partly cloudy. High 66F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:58 am
  • Sunset
    Sunset7:34 pm

Night

48°
Partly Cloudy Night
Rain drop
22%
WSW 6 mph

Partly cloudy skies. Low 48F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:21 pm
  • Moonset
    Moonset5:47 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Partly Cloudy Day Partly Cloudy
71°/51°
Rain drop 23%
Add

Day

71°
Partly Cloudy Day
Rain drop
23%
SW 9 mph

Partly to mostly cloudy. High 71F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:57 am
  • Sunset
    Sunset7:35 pm

Night

51°
Scattered Showers Night
Rain drop
31%
WSW 6 mph

Mostly cloudy skies with a few showers late. Low 51F. Winds WSW at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:25 pm
  • Moonset
    Moonset6:09 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Showers Showers
68°/51°
Rain drop 49%
Add

Day

68°
Showers
Rain drop
49%
SW 11 mph

Rain showers in the morning becoming more intermittent in the afternoon. High 68F. Winds SW at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity61%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:55 am
  • Sunset
    Sunset7:36 pm

Night

51°
Scattered Showers Night
Rain drop
32%
SW 8 mph

A few showers early with overcast skies late. Low 51F. Winds SW at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:30 pm
  • Moonset
    Moonset6:31 am
  • Moon Phase - Day 14 Full Moon

Thu 02

Showers Showers
71°/51°
Rain drop 48%
Add

Day

71°
Showers
Rain drop
48%
WSW 10 mph

Cloudy with occasional showers. High 71F. Winds WSW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity56%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:53 am
  • Sunset
    Sunset7:37 pm

Night

51°
Showers
Rain drop
48%
NW 8 mph

Cloudy with occasional rain showers. Low 51F. Winds NW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:33 pm
  • Moonset
    Moonset6:52 am
  • Moon Phase - Day 15 Full Moon

Fri 03

Mostly Cloudy Day Mostly Cloudy
65°/48°
Rain drop 24%
Add

Day

65°
Mostly Cloudy Day
Rain drop
24%
W 10 mph

Mainly cloudy. High near 65F. Winds W at 10 to 15 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:52 am
  • Sunset
    Sunset7:38 pm

Night

48°
Partly Cloudy Night
Rain drop
18%
SW 8 mph

Mostly cloudy skies early, then partly cloudy after midnight. Low 48F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:38 pm
  • Moonset
    Moonset7:16 am
  • Moon Phase - Day 16 Waning Gibbous

Sat 04

Partly Cloudy Day Partly Cloudy
67°/52°
Rain drop 23%
Add

Day

67°
Partly Cloudy Day
Rain drop
23%
SSE 9 mph

Sunshine and clouds mixed. High 67F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:50 am
  • Sunset
    Sunset7:39 pm

Night

52°
Scattered Showers Night
Rain drop
34%
S 7 mph

Mostly cloudy during the evening. A few showers developing late. Low 52F. Winds S at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:41 pm
  • Moonset
    Moonset7:42 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Showers Showers
70°/53°
Rain drop 46%
Add

Day

70°
Showers
Rain drop
46%
SSW 10 mph

Considerable cloudiness with occasional rain showers. High near 70F. Winds SSW at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity59%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:49 am
  • Sunset
    Sunset7:40 pm

Night

53°
Showers
Rain drop
46%
SW 8 mph

Considerable cloudiness with occasional rain showers. Low 53F. Winds SW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity67%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:45 pm
  • Moonset
    Moonset8:12 am
  • Moon Phase - Day 18 Waning Gibbous
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