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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 a wintry winter month in West Mifflin, Pennsylvania, with an average temperature fluctuating between 20.7°F (-6.3°C) and 33.4°F (0.8°C). In West Mifflin, the lowest average temperatures are observed in January, with a high of 33.4°F (0.8°C) and a low of 20.7°F (-6.3°C). Weather in January »
Weather in February
The last month of the winter, February, is another cold month in West Mifflin, Pennsylvania, with an average temperature varying between 23.4°F (-4.8°C) and 37.6°F (3.1°C). As West Mifflin welcomes February, the average high-temperature is noted at a still wintry 37.6°F (3.1°C), closely aligning with the preceding month. Weather in February »
Weather in March
March, the first month of the spring in West Mifflin, is a chilly month, with an average temperature ranging between min 31.5°F (-0.3°C) and max 47.8°F (8.8°C). March brings a rise in West Mifflin's average high-temperature, moving from a wintry 37.6°F (3.1°C) in February to a frosty 47.8°F (8.8°C). Weather in March »
Weather in April
April is a refreshing spring month in West Mifflin, Pennsylvania, with an average temperature fluctuating between 60.4°F (15.8°C) and 41.4°F (5.2°C). The transition to April introduces an increase in the average high-temperature, shifting from a chilly 47.8°F (8.8°C) in March to a refreshing 60.4°F (15.8°C). Weather in April »
Weather in May
May, the last month of the spring in West Mifflin, is a pleasant month, with an average temperature ranging between max 72.1°F (22.3°C) and min 51.4°F (10.8°C). As May arrives, West Mifflin's weather shows an increase in high-temperatures, moving from April's mild 60.4°F (15.8°C) to a pleasant 72.1°F (22.3°C). Weather in May »
Weather in June
June, the first month of the summer in West Mifflin, is a warm month, with an average temperature varying between 79°F (26.1°C) and 58.5°F (14.7°C). June's arrival coincides with a marginal rise in the average high-temperature, moving from May's pleasant 72.1°F (22.3°C) to a warm 79°F (26.1°C). Weather in June »
Weather in July
July, like June, in West Mifflin, Pennsylvania, is a moderately hot summer month, with an average temperature fluctuating between 83.3°F (28.5°C) and 62.6°F (17°C). July registers as the month with the highest average temperatures, reaching 83.3°F (28.5°C) at its peak and 62.6°F (17°C) at the lowest. July's heat index is evaluated at a tropical 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in West Mifflin, is also a moderately hot month, with an average temperature varying between 61°F (16.1°C) and 81.9°F (27.7°C). West Mifflin sees the arrival of August with an average high-temperature of a still moderately hot 81.9°F (27.7°C), indicating a subtle variation from July. Weather in August »
Weather in September
September, the first month of the autumn in West Mifflin, is also a moderately hot month, with an average temperature fluctuating between 75.6°F (24.2°C) and 55.8°F (13.2°C). During the shift to September, a minor reduction in average high-temperature is observed, shifting from a moderately hot 81.9°F (27.7°C) in August to a still warm 75.6°F (24.2°C). Weather in September »
Weather in October
October, like September, in West Mifflin, Pennsylvania, is another refreshing autumn month, with an average temperature fluctuating between 62.1°F (16.7°C) and 45.5°F (7.5°C). West Mifflin's October weather shows a moderate shift in high-temperatures, falling from September's warm 75.6°F (24.2°C) to an enjoyable 62.1°F (16.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in West Mifflin, Pennsylvania, with an average temperature fluctuating between 34°F (1.1°C) and 49.3°F (9.6°C). In November, the meteorological conditions alter, with the average high-temperature shifting from a refreshing 62.1°F (16.7°C) in October to a frosty 49.3°F (9.6°C). Weather in November »
Weather in December
December, the first month of the winter in West Mifflin, is still a cold month, with temperature in the range of an average low of 28.4°F (-2°C) and an average high of 39.6°F (4.2°C). Observing a mild shift, the average high-temperature during December reduces from November's frosty 49.3°F (9.6°C) to a wintry 39.6°F (4.2°C). Weather in December »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
West Mifflin notes the coldest temperatures in January, with a average high of 33.4°F (0.8°C) and a low of 20.7°F (-6.3°C).
How much does it rain?
Throughout the year, there are 128 rainfall days, and 10.2" (259mm) of precipitation is accumulated.
When does it snow in West Mifflin?
January through May, October through December are months with snowfall.
What is the snowiest month?
The months with the most snowfall are January and February, with an average 1.65" (42mm) of accumulated snow.
How much does it snow?
Throughout the year, there are 50 snowfall days, and 6.69" (170mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 3h of sunshine, January has the least sunshine of the year.
What is the most humid month?
The most humid month is February, with an average relative humidity of 85%.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 rainiest month?
The month with the most rainfall is May, when the rain falls for 15 days and typically aggregates up to 1.26" (32mm) of precipitation.
What is the month with the highest UV index?
The months with the highest UV index in West Mifflin are May through August, with an average maximum UV index of 6.
When it does not snow?
In West Mifflin, snow does not fall in June through September.
When are the longest days?
With an average of 15h and 0min of daylight, June has the longest days of the year.
What is the hottest time of year?
In West Mifflin, temperatures reach their average annual highs in July, measuring 83.3°F (28.5°C) and a minimum average of 62.6°F (17°C).
What is the least humid month?
The least humid month is August, with an average relative humidity of 74%.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.2h of sunshine.
What is the driest month?
The months with the least rainfall are September and November Rain falls for 9 days and accumulates 0.55" (14mm) of rain.
What is the month with the shortest days?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
What is the month with the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
West Mifflin, PA
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure
West Mifflin, PA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
West Mifflin, PA
- Average wind speed in January:
8mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.4mph - Average wind speed in May:
6mph - Average wind speed in June:
5.6mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.1mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.8mph - Average wind speed in December:
7.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
West Mifflin, PA
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (74%).
Average rainfall
West Mifflin, PA
- Average rainfall in January:
0.67" - Average rainfall in February:
0.83" - Average rainfall in March:
0.79" - Average rainfall in April:
0.98" - Average rainfall in May:
1.26" - Average rainfall in June:
1.1"
- Average rainfall in July:
1.02" - Average rainfall in August:
0.79" - Average rainfall in September:
0.55" - Average rainfall in October:
0.87" - Average rainfall in November:
0.55" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is May (1.26").
The driest months (with the least rainfall) are September and November (0.55").
Average rainfall days
West Mifflin, PA
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
15 days - Average rainfall days in June:
13.4 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
9 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is February (7.1 days).
Average snowfall
West Mifflin, PA
- Average snowfall in January:
1.65" - Average snowfall in February:
1.65" - Average snowfall in March:
1.18" - Average snowfall in April:
0.24" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The months with the highest snowfall are January and February (1.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
West Mifflin, PA
- Average snowfall days in January:
14.4 days - Average snowfall days in February:
11.4 days - Average snowfall days in March:
7.2 days - Average snowfall days in April:
2.1 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:
0.4 days - Average snowfall days in November:
4.2 days - Average snowfall days in December:
10.1 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
West Mifflin, 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 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - 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 24min).
- Average sunshine in January:
3h and 0min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days
West Mifflin, PA
- Average sunshine days in January:
13.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
14.9 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
16.8 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
West Mifflin, PA
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
West Mifflin, PA
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
West Mifflin, PA
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
West Mifflin, Pennsylvania, USA
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