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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, like December, is another subzero cold winter month in Mercer, Pennsylvania, with an average temperature fluctuating between 18.3°F (-7.6°C) and 30.6°F (-0.8°C). With average temperatures fluctuating between a high of 30.6°F (-0.8°C) and a low of 18.3°F (-7.6°C), January stands out as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Mercer, is an icy month, with an average temperature ranging between max 34.5°F (1.4°C) and min 19.9°F (-6.7°C). Mercer ushers in February with an average high-temperature of a wintry 34.5°F (1.4°C), showing a close resemblance to the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Mercer, Pennsylvania, with an average temperature fluctuating between 44.4°F (6.9°C) and 28.2°F (-2.1°C). March indicates a change in the average high-temperature, moving up from a wintry 34.5°F (1.4°C) in February to a frosty 44.4°F (6.9°C). Weather in March »
Weather in April
April is a moderate spring month in Mercer, Pennsylvania, with an average temperature ranging between max 57°F (13.9°C) and min 38.1°F (3.4°C). The shift into April brings an increase in the average high-temperature, moving from a chilly 44.4°F (6.9°C) in March to a refreshing 57°F (13.9°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Mercer, Pennsylvania, with an average temperature fluctuating between 69.4°F (20.8°C) and 49.1°F (9.5°C). With the onset of May, Mercer sees a temperature rise, with the average high-temperature moving from April's refreshing 57°F (13.9°C) to an agreeable 69.4°F (20.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Mercer, Pennsylvania, with an average temperature varying between 76.3°F (24.6°C) and 55.4°F (13°C). In Mercer, the onset of June comes with a modest high-temperature shift, transitioning from May's agreeable 69.4°F (20.8°C) to a warm 76.3°F (24.6°C). Weather in June »
Weather in July
July, like June, in Mercer, Pennsylvania, is a moderately hot summer month, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 59.5°F (15.3°C). During the warmest month, July, temperatures average a high of 80.4°F (26.9°C) and a low of 59.5°F (15.3°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Mercer, Pennsylvania, with an average temperature ranging between min 58.3°F (14.6°C) and max 79.2°F (26.2°C). August welcomes an average high-temperature of a still moderately hot 79.2°F (26.2°C), not much different from the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Mercer, Pennsylvania, with an average temperature varying between 72.9°F (22.7°C) and 53.4°F (11.9°C). With the onset of September, Mercer's climate undergoes a slight change as the average high-temperature moves from a moderately hot 79.2°F (26.2°C) in August to an agreeable 72.9°F (22.7°C). Weather in September »
Weather in October
October, the same as September, in Mercer, Pennsylvania, is another mild autumn month, with an average temperature fluctuating between 43.9°F (6.6°C) and 59.5°F (15.3°C). October is characterized by a reduction in the average high-temperature, from a pleasant 72.9°F (22.7°C) in September to a mild 59.5°F (15.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Mercer, is another chilly month, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 46.9°F (8.3°C). The shift from October to November involves a decrease in the average high-temperature, from a mild 59.5°F (15.3°C) to a frosty 46.9°F (8.3°C). Weather in November »
Weather in December
December, the first month of the winter in Mercer, is also a wintry month, with an average temperature varying between 37°F (2.8°C) and 26.2°F (-3.2°C). Transition into December marks a drop in the average high-temperature, moving from a chilly 46.9°F (8.3°C) in November to a wintry 37°F (2.8°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Mercer?
January brings the lowest temperatures, with an average high of 30.6°F (-0.8°C) and an average low of 18.3°F (-7.6°C).
How many days does it rain in Mercer?
In Mercer, Pennsylvania, during the entire year, the rain falls for 180.8 days and collects up to 36.65" (931mm) of precipitation.
When does it snow in Mercer?
January through May, October through December are months with snowfall in Mercer.
What is the snowiest month in Mercer?
The month with the most snowfall in Mercer, Pennsylvania, is January, when snow falls for 19.6 days and typically aggregates up to 8.27" (210mm) of snow.
How many days does it snow in Mercer?
In Mercer, during the entire year, snow falls for 76.2 days and aggregates up to 32.36" (822mm) of snow.
What is the month with the least sunshine in Mercer?
The month with the least sunshine is January, with an average of 2.4h of sunshine.
What is the most humid month in Mercer?
The most humid month in Mercer is February, with an average relative humidity of 89%.
When is Daylight Saving Time (DST) in Mercer?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mercer, 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 are the least humid months in Mercer?
The months with the lowest humidity in Mercer, Pennsylvania, are April, May and July, with an average relative humidity of 79%.
What is the wettest month in Mercer?
The months with the most rainfall are April and June, with an average 3.74" (95mm) of precipitation.
When is the highest UV index in Mercer?
May through August, with an average maximum UV index of 5, are months with the highest UV index in Mercer.
When it does not snow in Mercer?
In Mercer, Pennsylvania, snow does not fall in June through September.
When are the longest days in Mercer?
With an average of 15h and 6min of daylight, June has the longest days of the year in Mercer.
What are the warmest months in Mercer?
Mercer's temperature records reveal July as the warmest month, marked by average highs of 80.4°F (26.9°C) and lows of 59.5°F (15.3°C).
What are the months with the most sunshine in Mercer?
The months with the most sunshine are July and August, with an average of 9.9h of sunshine.
What is the driest month in Mercer?
The month with the least rainfall in Mercer, Pennsylvania, is November, when the rain falls for 11.5 days and typically collects 2.2" (56mm) of precipitation.
What is the month with the shortest days in Mercer?
December has the shortest days of the year in Mercer, Pennsylvania, with an average of 9h and 18min of daylight.
When is the lowest UV index in Mercer?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Mercer, PA
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure
Mercer, PA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Mercer, PA
- Average wind speed in January:
8.3mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.6mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.6mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity
Mercer, PA
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are April, May and July (79%).
Average rainfall
Mercer, PA
- Average rainfall in January:
2.87" - Average rainfall in February:
2.72" - Average rainfall in March:
3.03" - Average rainfall in April:
3.74" - Average rainfall in May:
3.7" - Average rainfall in June:
3.74"
The wettest months (with the highest rainfall) are April and June (3.74").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days
Mercer, PA
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
17.8 days - Average rainfall days in May:
20.9 days - Average rainfall days in June:
18.1 days
- Average rainfall days in July:
19.6 days - Average rainfall days in August:
18.8 days - Average rainfall days in September:
13.8 days - Average rainfall days in October:
16.7 days - Average rainfall days in November:
11.5 days - Average rainfall days in December:
11.3 days
The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Mercer, PA
- Average snowfall in January:
8.27" - Average snowfall in February:
8.15" - Average snowfall in March:
4.33" - Average snowfall in April:
1.26" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is January (8.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Mercer, PA
- Average snowfall days in January:
19.6 days - Average snowfall days in February:
17 days - Average snowfall days in March:
11.8 days - Average snowfall days in April:
4.2 days - Average snowfall days in May:
0.4 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:
0.8 days - Average snowfall days in November:
7.5 days - Average snowfall days in December:
14.9 days
The month with the highest number of snowfall days is January (19.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mercer, 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 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - 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 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
2h and 2min - Average sunshine in February:
2h and 5min - Average sunshine in March:
5h and 1min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 1min - Average sunshine in October:
4h and 5min - Average sunshine in November:
4h and 2min - Average sunshine in December:
2h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days
Mercer, PA
- Average sunshine days in January:
7.3 days - Average sunshine days in February:
6.2 days - Average sunshine days in March:
9.3 days - Average sunshine days in April:
9 days - Average sunshine days in May:
8.3 days - Average sunshine days in June:
9.3 days
- Average sunshine days in July:
9.2 days - Average sunshine days in August:
10.5 days - Average sunshine days in September:
14 days - Average sunshine days in October:
11.7 days - Average sunshine days in November:
13.5 days - Average sunshine days in December:
8.5 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (6.2 days).
Average UV index
Mercer, PA
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Mercer, PA
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Mercer, PA
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
Mercer, Pennsylvania, USA
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