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

As of 1:44 pm EDT
alertLevel2

Tornado Watch

alertLevel3

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

Today

Thunderstorms Thunderstorms
66°/28°
Rain drop 92%
Subtract

Day

66°
Thunderstorms
Rain drop
92%
SW 20 mph

Thunderstorms. High 66F. Winds SW at 15 to 25 mph. Chance of rain 90%.

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An Additional Foot Of Snow Today?

  • Humidity
    Humidity84%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:21 am
  • Sunset
    Sunset7:19 pm

Night

28°
Rain, Snow, Wintery Mix
Mixed precipitation
100%
WNW 17 mph

Cloudy with rain and snow diminishing this evening. Partial clearing overnight. Low 28F. Winds WNW at 10 to 20 mph. Chance of precip 100%.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:11 am
  • Moonset
    Moonset4:54 pm
  • Moon Phase - Day 27 Waning Crescent

Tue 17

Mostly Cloudy Day Mostly Cloudy
35°/23°
Rain drop 15%
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Day

35°
Mostly Cloudy Day
Mixed precipitation
15%
W 17 mph

A mix of clouds and sun early, then becoming cloudy later in the day. A few flurries or snow showers possible. High around 35F. Winds W at 10 to 20 mph.

  • Humidity
    Humidity43%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise7:19 am
  • Sunset
    Sunset7:20 pm

Night

23°
Partly Cloudy Night
Snowflake
9%
WNW 13 mph

Partly cloudy skies. Cold. Low 23F. Winds WNW at 10 to 15 mph.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:36 am
  • Moonset
    Moonset6:03 pm
  • Moon Phase - Day 28 Waning Crescent

Wed 18

Mostly Cloudy Day Mostly Cloudy
40°/32°
Rain drop 0%
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Day

40°
Mostly Cloudy Day
SSW 12 mph

Mostly cloudy. High near 40F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity42%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:18 am
  • Sunset
    Sunset7:21 pm

Night

32°
Mostly Cloudy Night
Mixed precipitation
3%
SSE 9 mph

Partly cloudy skies early will become overcast later during the night. Low 32F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:00 am
  • Moonset
    Moonset7:13 pm
  • Moon Phase - Day 29 New Moon

Thu 19

Mostly Cloudy Day Mostly Cloudy
53°/36°
Rain drop 5%
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Day

53°
Mostly Cloudy Day
Rain drop
5%
S 8 mph

Mostly cloudy skies. High 53F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:16 am
  • Sunset
    Sunset7:22 pm

Night

36°
Partly Cloudy Night
Mixed precipitation
11%
W 5 mph

Cloudy early with partial clearing expected late. Low 36F. Winds light and variable.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:24 am
  • Moonset
    Moonset8:25 pm
  • Moon Phase - Day 0 New Moon

Fri 20

Partly Cloudy Day Partly Cloudy
58°/42°
Rain drop 24%
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Day

58°
Partly Cloudy Day
Rain drop
24%
W 9 mph

Mostly cloudy skies early will become partly cloudy later in the day. High 58F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:15 am
  • Sunset
    Sunset7:24 pm

Night

42°
Showers
Rain drop
38%
WSW 6 mph

Considerable cloudiness with occasional rain showers. Low 42F. Winds light and variable. Chance of rain 40%.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:49 am
  • Moonset
    Moonset9:40 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Mostly Cloudy Day Mostly Cloudy
60°/40°
Rain drop 24%
Add

Day

60°
Mostly Cloudy Day
Rain drop
24%
WSW 9 mph

Mostly cloudy skies. Slight chance of a rain shower. High around 60F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:25 pm

Night

40°
Mostly Cloudy Night
Rain drop
20%
NW 9 mph

Mostly cloudy. Low near 40F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:17 am
  • Moonset
    Moonset10:56 pm
  • Moon Phase - Day 3 Waxing Crescent

Sun 22

Partly Cloudy Day Partly Cloudy
51°/33°
Rain drop 24%
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Day

51°
Partly Cloudy Day
Rain drop
24%
WNW 12 mph

Some sun in the morning with increasing clouds during the afternoon. Slight chance of a rain shower. High 51F. Winds WNW at 10 to 15 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:11 am
  • Sunset
    Sunset7:26 pm

Night

33°
Partly Cloudy Night
Mixed precipitation
24%
NW 10 mph

A few clouds from time to time. Low 33F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:51 am
  • Moonset
    Moonset--
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Partly Cloudy Day Partly Cloudy
47°/31°
Rain drop 20%
Add

Day

47°
Partly Cloudy Day
Rain drop
20%
NW 11 mph

Partly cloudy. High 47F. Winds NW at 10 to 15 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:27 pm

Night

31°
Partly Cloudy Night
Mixed precipitation
17%
NNW 8 mph

Partly cloudy. Low 31F. Winds NNW at 5 to 10 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:33 am
  • Moonset
    Moonset12:14 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Partly Cloudy Day Partly Cloudy
47°/34°
Rain drop 15%
Add

Day

47°
Partly Cloudy Day
Rain drop
15%
NNE 7 mph

Partly cloudy skies. High 47F. Winds NNE at 5 to 10 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:08 am
  • Sunset
    Sunset7:28 pm

Night

34°
Partly Cloudy Night
Mixed precipitation
17%
SE 6 mph

A few clouds from time to time. Low 34F. Winds light and variable.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:24 am
  • Moonset
    Moonset1:29 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Mostly Cloudy Day Mostly Cloudy
53°/39°
Rain drop 24%
Add

Day

53°
Mostly Cloudy Day
Rain drop
24%
SSE 11 mph

Mainly cloudy. High 53F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:29 pm

Night

39°
Scattered Showers Night
Rain drop
31%
S 8 mph

Cloudy during the evening. A few showers developing late. Low 39F. Winds S at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:27 am
  • Moonset
    Moonset2:36 am
  • Moon Phase - Day 7 First Quarter

Thu 26

Showers Showers
55°/38°
Rain drop 41%
Add

Day

55°
Showers
Rain drop
41%
SSW 12 mph

Cloudy with occasional showers. High around 55F. Winds SSW at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity56%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:05 am
  • Sunset
    Sunset7:30 pm

Night

38°
Showers
Rain drop
50%
SW 9 mph

Cloudy with occasional rain showers. Low 38F. Winds SW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:37 pm
  • Moonset
    Moonset3:33 am
  • Moon Phase - Day 8 Waxing Gibbous

Fri 27

Scattered Showers Day AM Showers
49°/34°
Rain drop 47%
Add

Day

49°
Scattered Showers Day
Rain drop
47%
WSW 13 mph

A few showers in the morning, then clouds lingering in the afternoon. High 49F. Winds WSW at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity65%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:03 am
  • Sunset
    Sunset7:31 pm

Night

34°
Scattered Showers Night
Rain drop
37%
NW 11 mph

Mostly cloudy with some showers late. Low 34F. Winds NW at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:50 pm
  • Moonset
    Moonset4:17 am
  • Moon Phase - Day 9 Waxing Gibbous

Sat 28

Showers Showers
45°/33°
Rain drop 37%
Add

Day

45°
Showers
Rain drop
37%
NW 13 mph

Rain showers in the morning becoming more intermittent in the afternoon. High around 45F. Winds NW at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity60%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:02 am
  • Sunset
    Sunset7:32 pm

Night

33°
Scattered Showers Night
Rain drop
36%
WNW 8 mph

Rain showers early with mostly cloudy conditions late. Low 33F. Winds WNW at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:03 pm
  • Moonset
    Moonset4:53 am
  • Moon Phase - Day 10 Waxing Gibbous

Sun 29

Mostly Cloudy Day Mostly Cloudy
53°/41°
Rain drop 24%
Add

Day

53°
Mostly Cloudy Day
Rain drop
24%
SW 12 mph

Considerable cloudiness. High 53F. Winds SW at 10 to 15 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:00 am
  • Sunset
    Sunset7:33 pm

Night

41°
Mostly Cloudy Night
Rain drop
24%
SW 9 mph

Mainly cloudy. Low 41F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity62%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:13 pm
  • Moonset
    Moonset5:23 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Mostly Cloudy Day Mostly Cloudy
60°/44°
Rain drop 23%
Add

Day

60°
Mostly Cloudy Day
Rain drop
23%
WSW 11 mph

Mostly cloudy. High around 60F. Winds WSW at 10 to 15 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:58 am
  • Sunset
    Sunset7:34 pm

Night

44°
Showers
Rain drop
37%
W 8 mph

Cloudy with occasional showers. Low 44F. Winds W at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:21 pm
  • Moonset
    Moonset5:47 am
  • Moon Phase - Day 12 Waxing Gibbous
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