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10-Day Weather Forecast for St. Clair, Pennsylvania 17970 - The Weather Channel | weather.com
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10 Day Weather-

As of 3:42 pm EDT

Tonight

Mostly Cloudy Night Mostly Cloudy
--/27°
Rain drop 3%
Subtract

Night

27°
Mostly Cloudy Night
Mixed precipitation
3%
SSE 7 mph

Partly cloudy skies this evening will become overcast overnight. Low 27F. Winds SSE at 5 to 10 mph.

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Highs In The 80s, 90s This Weekend

  • Humidity
    Humidity51%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:53 am
  • Moonset
    Moonset7:06 pm
  • Moon Phase - Day 29 New Moon

Thu 19

Cloudy Cloudy
48°/33°
Rain drop 11%
Add

Day

48°
Cloudy
Rain drop
11%
S 5 mph

Overcast. High 48F. Winds light and variable.

  • Humidity
    Humidity57%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:16 pm

Night

33°
Partly Cloudy Night
Mixed precipitation
8%
W 1 mph

Cloudy skies early, then partly cloudy after midnight. Low 33F. Winds light and variable.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:17 am
  • Moonset
    Moonset8:18 pm
  • Moon Phase - Day 0 New Moon

Fri 20

Mostly Cloudy Day Mostly Cloudy
57°/44°
Rain drop 24%
Add

Day

57°
Mostly Cloudy Day
Rain drop
24%
S 8 mph

Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. Slight chance of a rain shower. High 57F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity65%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:08 am
  • Sunset
    Sunset7:17 pm

Night

44°
Rain
Rain drop
76%
SW 6 mph

Rain early...then remaining cloudy with showers late. Low 44F. Winds SW at 5 to 10 mph. Chance of rain 80%. Rainfall near a quarter of an inch.

  • Humidity
    Humidity84%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:41 am
  • Moonset
    Moonset9:34 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Partly Cloudy Day AM Clouds/PM Sun
60°/41°
Rain drop 15%
Add

Day

60°
Partly Cloudy Day
Rain drop
15%
NW 7 mph

Cloudy skies early, then partly cloudy in the afternoon. Slight chance of a rain shower. High around 60F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity62%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:18 pm

Night

41°
Partly Cloudy Night
Rain drop
6%
ENE 4 mph

Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 41F. Winds light and variable.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:08 am
  • Moonset
    Moonset10:51 pm
  • Moon Phase - Day 3 Waxing Crescent

Sun 22

Mostly Cloudy Day Mostly Cloudy
65°/40°
Rain drop 24%
Add

Day

65°
Mostly Cloudy Day
Rain drop
24%
S 8 mph

Mostly cloudy skies. Slight chance of a rain shower. High near 65F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity66%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:04 am
  • Sunset
    Sunset7:19 pm

Night

40°
Showers
Rain drop
62%
NW 8 mph

Considerable cloudiness with occasional rain showers. Low around 40F. Winds NW at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity82%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:41 am
  • Moonset
    Moonset--
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Partly Cloudy Day Partly Cloudy
43°/26°
Rain drop 24%
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Day

43°
Partly Cloudy Day
Rain drop
24%
NNW 12 mph

Considerable clouds early. Some decrease in clouds later in the day. Slight chance of a rain shower. High 43F. Winds NNW at 10 to 15 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:03 am
  • Sunset
    Sunset7:20 pm

Night

26°
Partly Cloudy Night
NNW 9 mph

Partly cloudy skies. Low 26F. Winds NNW at 5 to 10 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:23 am
  • Moonset
    Moonset12:10 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Partly Cloudy Day Partly Cloudy
47°/31°
Rain drop 1%
Add

Day

47°
Partly Cloudy Day
Rain drop
1%
WNW 5 mph

Partly cloudy. High 47F. Winds light and variable.

  • Humidity
    Humidity40%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset7:21 pm

Night

31°
Partly Cloudy Night
Mixed precipitation
3%
SW 3 mph

Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 31F. Winds light and variable.

  • Humidity
    Humidity55%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:14 am
  • Moonset
    Moonset1:25 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Partly Cloudy Day Partly Cloudy
50°/35°
Rain drop 1%
Add

Day

50°
Partly Cloudy Day
Rain drop
1%
WNW 7 mph

Partly cloudy. High near 50F. Winds WNW at 5 to 10 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:59 am
  • Sunset
    Sunset7:22 pm

Night

35°
Mostly Cloudy Night
Mixed precipitation
21%
ENE 4 mph

Partly cloudy skies early will become overcast later during the night. Low around 35F. Winds light and variable.

  • Humidity
    Humidity54%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:16 am
  • Moonset
    Moonset2:32 am
  • Moon Phase - Day 7 First Quarter

Thu 26

Mostly Cloudy Day Mostly Cloudy
56°/44°
Rain drop 24%
Add

Day

56°
Mostly Cloudy Day
Rain drop
24%
SSE 9 mph

Mainly cloudy. High 56F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:58 am
  • Sunset
    Sunset7:23 pm

Night

44°
Showers
Rain drop
55%
SW 9 mph

Considerable cloudiness with occasional rain showers. Low 44F. Winds SW at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:26 pm
  • Moonset
    Moonset3:29 am
  • Moon Phase - Day 8 Waxing Gibbous

Fri 27

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

Day

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

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

  • Humidity
    Humidity56%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:56 am
  • Sunset
    Sunset7:24 pm

Night

24°
Partly Cloudy Night
Snowflake
24%
NNW 9 mph

A few clouds. Low 24F. Winds NNW at 5 to 10 mph.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:40 pm
  • Moonset
    Moonset4:13 am
  • Moon Phase - Day 9 Waxing Gibbous

Sat 28

Partly Cloudy Day Partly Cloudy
41°/27°
Rain drop 20%
Add

Day

41°
Partly Cloudy Day
Rain drop
20%
NNW 7 mph

Sunshine and clouds mixed. High 41F. Winds NNW at 5 to 10 mph.

  • Humidity
    Humidity51%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:54 am
  • Sunset
    Sunset7:25 pm

Night

27°
Partly Cloudy Night
Mixed precipitation
8%
NW 4 mph

A few clouds from time to time. Low 27F. Winds light and variable.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:53 pm
  • Moonset
    Moonset4:48 am
  • Moon Phase - Day 10 Waxing Gibbous

Sun 29

Partly Cloudy Day Partly Cloudy
47°/33°
Rain drop 14%
Add

Day

47°
Partly Cloudy Day
Rain drop
14%
WSW 8 mph

Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 47F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:53 am
  • Sunset
    Sunset7:26 pm

Night

33°
Partly Cloudy Night
Mixed precipitation
24%
SW 5 mph

A few clouds from time to time. Low 33F. Winds light and variable.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:04 pm
  • Moonset
    Moonset5:17 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Partly Cloudy Day Partly Cloudy
48°/35°
Rain drop 24%
Add

Day

48°
Partly Cloudy Day
Rain drop
24%
W 8 mph

Partly to mostly cloudy. High 48F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity65%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:51 am
  • Sunset
    Sunset7:27 pm

Night

35°
Partly Cloudy Night
Mixed precipitation
23%
WSW 5 mph

A few clouds. Low near 35F. Winds light and variable.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:13 pm
  • Moonset
    Moonset5:41 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Partly Cloudy Day Partly Cloudy
52°/41°
Rain drop 24%
Add

Day

52°
Partly Cloudy Day
Rain drop
24%
WSW 8 mph

Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 52F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity64%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:49 am
  • Sunset
    Sunset7:28 pm

Night

41°
Showers
Rain drop
41%
WSW 6 mph

Considerable cloudiness with occasional rain showers. Low 41F. Winds light and variable. Chance of rain 40%.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:18 pm
  • Moonset
    Moonset6:03 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Scattered Showers Day PM Showers
60°/43°
Rain drop 48%
Add

Day

60°
Scattered Showers Day
Rain drop
48%
WSW 8 mph

Mostly cloudy with some showers in the afternoon. High near 60F. Winds WSW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity56%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:48 am
  • Sunset
    Sunset7:29 pm

Night

43°
Showers
Rain drop
52%
ESE 6 mph

Considerable cloudiness with occasional rain showers. Low 43F. Winds light and variable. Chance of rain 50%.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:24 pm
  • Moonset
    Moonset6:23 am
  • Moon Phase - Day 14 Full Moon
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