Climate and monthly weather forecastMercersville, MD
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Mercersville, Maryland, with an average temperature fluctuating between 37°F (2.8°C) and 23.4°F (-4.8°C). With an average high-temperature of 37°F (2.8°C) and an average low-temperature of 23.4°F (-4.8°C), January is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Mercersville, Maryland, with an average temperature ranging between max 41.5°F (5.3°C) and min 25.9°F (-3.4°C). The shift to February signals an average high-temperature of a still wintry 41.5°F (5.3°C), subtly varied from January's 37°F (2.8°C). Weather in February »Weather in March
The first month of the spring, March, is a cool month in Mercersville, Maryland, with an average temperature ranging between max 50.2°F (10.1°C) and min 32.9°F (0.5°C). March's onset brings a minor rise in the average high-temperature, moving from a wintry 41.5°F (5.3°C) in February to a fresh 50.2°F (10.1°C). Weather in March »Weather in April
April is a comfortable spring month in Mercersville, Maryland, with an average temperature fluctuating between 62.6°F (17°C) and 42.4°F (5.8°C). Mercersville's transition into April sees a rise in the average high-temperature, advancing from a fresh 50.2°F (10.1°C) in March to a comfortable 62.6°F (17°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Mercersville, Maryland, with an average temperature ranging between min 52.3°F (11.3°C) and max 72.3°F (22.4°C). The commencement of May sees a shift in the average high-temperature, moving from an enjoyable 62.6°F (17°C) in April to a pleasant 72.3°F (22.4°C). Weather in May »Weather in June
June, the first month of the summer in Mercersville, is a warm month, with an average temperature fluctuating between 80.4°F (26.9°C) and 59.4°F (15.2°C). Observing a slight rise in June, the average high-temperature shifts from May's pleasant 72.3°F (22.4°C) to a moderately hot 80.4°F (26.9°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Mercersville, Maryland, with an average temperature fluctuating between 64.2°F (17.9°C) and 85.6°F (29.8°C). July, noted for its average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 64.2°F (17.9°C), is considered the warmest month. The average heat index in July is appraised at a fiery hot 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Mercersville, Maryland, with temperature in the range of an average low of 62.6°F (17°C) and an average high of 83.3°F (28.5°C). The commencement of August records an average high-temperature of a still warm 83.3°F (28.5°C), barely varying from July's 85.6°F (29.8°C). Weather in August »Weather in September
September, the first month of the autumn in Mercersville, is also a moderately hot month, with an average temperature fluctuating between 56.8°F (13.8°C) and 76.1°F (24.5°C). With the onset of September, the average high-temperature subtly recedes from August's 83.3°F (28.5°C) to a still moderately hot 76.1°F (24.5°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Mercersville, Maryland, with an average temperature varying between 63.9°F (17.7°C) and 46.2°F (7.9°C). With the beginning of October, the average high-temperature shows a decrease, transitioning from a moderately hot 76.1°F (24.5°C) in September to a refreshing 63.9°F (17.7°C). Weather in October »Weather in November
November, the last month of the autumn in Mercersville, is also a fresh month, with an average temperature varying between 51.6°F (10.9°C) and 35.2°F (1.8°C). November's onset brings a slight change in high-temperatures, falling from a refreshing 63.9°F (17.7°C) in October to a fresh 51.6°F (10.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Mercersville, Maryland, with an average temperature fluctuating between 30.2°F (-1°C) and 42.3°F (5.7°C). Mercersville's average high-temperature decreases in December, falling from a cool 51.6°F (10.9°C) in November to an icy 42.3°F (5.7°C). Weather in December »Updated: Aug 8, 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
January is the month when Mercersville sees the average lowest temperatures, with a high of 37°F (2.8°C) and a low of 23.4°F (-4.8°C).
January is the month with the least rainfall. Rain falls for 9.6 days and accumulates 1.97" (50mm) of precipitation.
Throughout the year, in Mercersville, there are 162.4 rainfall days, and 30.16" (766mm) of precipitation is accumulated.
January through April, October through December are months with snowfall.
The month with the most snowfall is January, when snow falls for 7.8 days and typically aggregates up to 4.72" (120mm) of snow.
Throughout the year, there are 24.4 snowfall days, and 14.29" (363mm) of snow is accumulated.
The months with the lowest UV index in Mercersville are January, February, November and December, with an average maximum UV index of 2.
February has the least sunshine of the year, with an average of 4.7h of sunshine.
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.
May, October and December, with an average relative humidity of 79%, are most humid months.
May through September are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
June has the longest days of the year in Mercersville, with an average of 14h and 54min of daylight.
July, on average, is the warmest month, registering a high temperature of 85.6°F (29.8°C) and a low of 64.2°F (17.9°C).
July is the least humid month, with an average relative humidity of 74%.
The month with the most rainfall is July, when the rain falls for 16.2 days and typically aggregates up to 3.27" (83mm) of precipitation.
With an average of 10.6h of sunshine, July has the most sunshine of the year.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Mercersville, MD
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Mercersville, MD
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"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:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Mercersville, MD
- Average wind speed in January:
7.6mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.5mph - Average wind speed in May:
5.9mph - Average wind speed in June:
5.4mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.5mph - Average wind speed in September:
5.1mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.6mph - Average wind speed in December:
7mph
The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity
Mercersville, MD
The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall
Mercersville, MD
- Average rainfall in January:
1.97" - Average rainfall in February:
2.09" - Average rainfall in March:
2.24" - Average rainfall in April:
2.64" - Average rainfall in May:
3.23" - Average rainfall in June:
2.64"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days
Mercersville, MD
- Average rainfall days in January:
9.6 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
17.3 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
12.8 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall
Mercersville, MD
The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Mercersville, MD
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 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:
0.1 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Mercersville, MD
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Mercersville, MD
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
11 days - Average sunshine days in May:
11.4 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
16.4 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
16.4 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).
Average UV index
Mercersville, MD
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Mercersville, MD
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Mercersville, MD
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).
