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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is another cold winter month in Saint Clair, Pennsylvania, with an average temperature ranging between max 32.5°F (0.3°C) and min 20.5°F (-6.4°C). The lowest temperatures are recorded in January, with averages reaching a high of 32.5°F (0.3°C) and a low of 20.5°F (-6.4°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Saint Clair, Pennsylvania, with an average temperature fluctuating between 36.1°F (2.3°C) and 22.3°F (-5.4°C). The shift into February reveals an average high-temperature of a still wintry 36.1°F (2.3°C), closely mirroring January's climate. Weather in February »
Weather in March
March, the first month of the spring in Saint Clair, is a chilly month, with an average temperature fluctuating between 45.3°F (7.4°C) and 29.3°F (-1.5°C). March marks a rise in the average high-temperature, moving from February's cold 36.1°F (2.3°C) to a frosty 45.3°F (7.4°C). Weather in March »
Weather in April
April in Saint Clair, Pennsylvania, is a refreshing spring month, with an average temperature varying between 57.4°F (14.1°C) and 39.7°F (4.3°C). In Saint Clair, stepping into April brings a temperature increase, moving up from March's frosty 45.3°F (7.4°C) to a refreshing 57.4°F (14.1°C). Weather in April »
Weather in May
May, the last month of the spring in Saint Clair, is a pleasant month, with an average temperature ranging between max 68.4°F (20.2°C) and min 49.6°F (9.8°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a refreshing 57.4°F (14.1°C) to an agreeable 68.4°F (20.2°C). Weather in May »
Weather in June
June, the first month of the summer in Saint Clair, is a warm month, with an average temperature ranging between min 56.8°F (13.8°C) and max 75.7°F (24.3°C). June introduces a minor temperature shift, with average high-temperatures adjusting from May's pleasant 68.4°F (20.2°C) to a moderately hot 75.7°F (24.3°C). Weather in June »
Weather in July
July, like June, in Saint Clair, Pennsylvania, is a moderately hot summer month, with an average temperature fluctuating between 81.5°F (27.5°C) and 61.3°F (16.3°C). July, with its high-temperature average of 81.5°F (27.5°C) and a low-temperature average of 61.3°F (16.3°C), is the warmest month. July's heat index is computed to be a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Saint Clair, Pennsylvania, with an average temperature ranging between min 59.5°F (15.3°C) and max 79°F (26.1°C). In August, Saint Clair experiences a minor shift in meteorological conditions with average high-temperatures marked at a still warm 79°F (26.1°C), closely mirroring the climate in July. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Saint Clair, Pennsylvania, with an average temperature varying between 53.6°F (12°C) and 73°F (22.8°C). During the shift to September, Saint Clair records a mild decrease in average high-temperature, moving from a moderately hot 79°F (26.1°C) in August to a pleasant 73°F (22.8°C). Weather in September »
Weather in October
October, like September, in Saint Clair, Pennsylvania, is another refreshing autumn month, with an average temperature fluctuating between 44.6°F (7°C) and 60.8°F (16°C). During Saint Clair's transition into October, the average high-temperature lessens, moving from an agreeable 73°F (22.8°C) in September to a refreshing 60.8°F (16°C). Weather in October »
Weather in November
November, the last month of the autumn in Saint Clair, is another chilly month, with an average temperature fluctuating between 33.8°F (1°C) and 48°F (8.9°C). The onset of November entails a temperature shift, as the average high-temperature decreases from a comfortable 60.8°F (16°C) in October to a frosty 48°F (8.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Saint Clair, Pennsylvania, with temperature in the range of an average high of 38.8°F (3.8°C) and an average low of 27.7°F (-2.4°C). As December commences, the average high-temperature shows a reduction, transitioning from a chilly 48°F (8.9°C) in November to a cold 38.8°F (3.8°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Saint Clair?
Saint Clair, Pennsylvania, reaches its average lowest temperatures in January, measuring 32.5°F (0.3°C) at the peak and 20.5°F (-6.4°C) at the lowest.
How many days does it rain in Saint Clair?
In Saint Clair, Pennsylvania, during the entire year, the rain falls for 172.9 days and collects up to 34.21" (869mm) of precipitation.
When does it snow in Saint Clair?
Months with snowfall are January through May, October through December.
What is the snowiest month in Saint Clair?
The month with the most snowfall in Saint Clair, Pennsylvania, is January, when snow falls for 11.8 days and typically aggregates up to 5.47" (139mm) of snow.
How much does it snow in Saint Clair?
In Saint Clair, during the entire year, snow falls for 39.7 days and aggregates up to 20.47" (520mm) of snow.
What are the months with the least sunshine in Saint Clair?
January, February and December, with an average of 4.4h of sunshine, are months with the least sunshine in Saint Clair, Pennsylvania.
What is the month with the lowest UV index in Saint Clair?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Saint Clair.
What is the most humid month in Saint Clair?
The most humid month in Saint Clair, Pennsylvania, is February, with an average relative humidity of 83%.
When is Daylight Saving Time (DST) in Saint Clair?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Saint Clair, Pennsylvania, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month in Saint Clair?
April is the least humid month in Saint Clair, with an average relative humidity of 77%.
What is the rainiest month in Saint Clair?
May is the month with the most rainfall in Saint Clair, Pennsylvania. Rain falls for 18.7 days and accumulates 3.39" (86mm) of precipitation.
When it does not snow in Saint Clair?
June through September are months without snowfall.
When are the longest days in Saint Clair?
June has the longest days of the year in Saint Clair, with an average of 15h and 0min of daylight.
What is the warmest month in Saint Clair?
In Saint Clair, Pennsylvania, the peak temperatures are generally noted in July, averaging a high of 81.5°F (27.5°C) and a low of 61.3°F (16.3°C).
What month has the most sunshine in Saint Clair?
The month with the most sunshine in Saint Clair, Pennsylvania, is July, with an average of 10.5h of sunshine.
What is the month with the highest UV index in Saint Clair?
With an average maximum UV index of 6, July is the month with the highest UV index in Saint Clair.
What is the driest month in Saint Clair?
September is the month with the least rainfall. Rain falls for 12.7 days and accumulates 2.09" (53mm) of precipitation.
What is the month with the shortest days in Saint Clair?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Saint Clair, PA
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Saint Clair, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Saint Clair, PA
- Average wind speed in January:
8.1mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.4mph - Average wind speed in April:
8.3mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.7mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.7mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Saint Clair, PA
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall
Saint Clair, PA
- Average rainfall in January:
2.68" - Average rainfall in February:
2.6" - Average rainfall in March:
2.76" - Average rainfall in April:
3.15" - Average rainfall in May:
3.39" - Average rainfall in June:
2.76"
- Average rainfall in July:
3.19" - Average rainfall in August:
3.07" - Average rainfall in September:
2.09" - Average rainfall in October:
2.95" - Average rainfall in November:
2.72" - Average rainfall in December:
2.87"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days
Saint Clair, PA
- Average rainfall days in January:
10.8 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
14.2 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
18.7 days - Average rainfall days in June:
16.6 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
16.2 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
10.8 days - Average rainfall days in December:
13.5 days
The month with the highest number of rainy days is May (18.7 days).
The months with the least rainy days are January and November (10.8 days).
Average snowfall
Saint Clair, PA
- Average snowfall in January:
5.47" - Average snowfall in February:
4.84" - Average snowfall in March:
4.96" - Average snowfall in April:
0.24" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is January (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Saint Clair, PA
- Average snowfall days in January:
11.8 days - Average snowfall days in February:
10.4 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
6.9 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Clair, PA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 1min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 24min).
Average sunshine days
Saint Clair, PA
- Average sunshine days in January:
13.3 days - Average sunshine days in February:
10.6 days - Average sunshine days in March:
11.9 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
9.6 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
12.2 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
13.7 days - Average sunshine days in November:
16.3 days - Average sunshine days in December:
14.2 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.6 days).
Average UV index
Saint Clair, PA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Saint Clair, PA
The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Saint Clair, PA
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Saint Clair, Pennsylvania, USA
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