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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, in Mertztown, Pennsylvania, is an icy winter month, with an average temperature fluctuating between 34.3°F (1.3°C) and 21.6°F (-5.8°C). Mertztown notes the coldest temperatures in January, with a high average of 34.3°F (1.3°C) and a low of 21.6°F (-5.8°C). Weather in January »
Weather in February
February, the last month of the winter in Mertztown, is another cold month, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 37.9°F (3.3°C). Mertztown, Pennsylvania, signifies an average high-temperature of a still wintry 37.9°F (3.3°C) in February, closely mirroring the 34.3°F (1.3°C) of January. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Mertztown, Pennsylvania, with an average temperature ranging between min 30.6°F (-0.8°C) and max 46.6°F (8.1°C). The beginning of March signals a minor rise in the average high-temperature, moving from an icy 37.9°F (3.3°C) in February to a frosty 46.6°F (8.1°C). Weather in March »
Weather in April
April is a mild spring month in Mertztown, Pennsylvania, with an average temperature fluctuating between 40.5°F (4.7°C) and 59°F (15°C). The start of April brings a rise in the average high-temperature, moving from a frosty 46.6°F (8.1°C) in March to a refreshing 59°F (15°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Mertztown, Pennsylvania, with an average temperature varying between 50.7°F (10.4°C) and 69.8°F (21°C). May brings a temperature change, with average high-temperatures moving from April's refreshing 59°F (15°C) to an agreeable 69.8°F (21°C). Weather in May »
Weather in June
June, the first month of the summer in Mertztown, is a moderately hot month, with an average temperature ranging between max 77.5°F (25.3°C) and min 58.3°F (14.6°C). Mertztown's weather shows a minor temperature rise with the arrival of June, moving from a pleasant 69.8°F (21°C) in May to a moderately hot 77.5°F (25.3°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Mertztown, Pennsylvania, with an average temperature ranging between max 83.8°F (28.8°C) and min 63.5°F (17.5°C). July is the month that records the highest temperatures, with averages ranging from a high of 83.8°F (28.8°C) to a low of 63.5°F (17.5°C). Throughout July, the heat index is appraised at a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Mertztown, Pennsylvania, with an average temperature ranging between min 61.5°F (16.4°C) and max 81.1°F (27.3°C). August's onset brings an average high-temperature of a still warm 81.1°F (27.3°C), showing a minute difference from July's 83.8°F (28.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Mertztown, is also a moderately hot month, with an average temperature ranging between min 55.2°F (12.9°C) and max 74.5°F (23.6°C). The onset of September entails a subtle temperature shift, as the average high-temperature eases from 81.1°F (27.3°C) in August to a still moderately hot 74.5°F (23.6°C). Weather in September »
Weather in October
October, like September, in Mertztown, Pennsylvania, is another comfortable autumn month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 62.1°F (16.7°C). The average high-temperature decreases in October, shifting from a moderately hot 74.5°F (23.6°C) in September to an enjoyable 62.1°F (16.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Mertztown, is another cool month, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 50°F (10°C). During the transition into November, Mertztown observes a decrease in the average high-temperature, falling from a comfortable 62.1°F (16.7°C) in October to a fresh 50°F (10°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Mertztown, Pennsylvania, with an average temperature ranging between min 28.9°F (-1.7°C) and max 40.3°F (4.6°C). The onset of December comes with a shift in the average high-temperature, falling from a cool 50°F (10°C) in November to a cold 40.3°F (4.6°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Mertztown?
Mertztown's coldest month, January, registers temperatures that range from a high of 34.3°F (1.3°C) to a low of 21.6°F (-5.8°C).
How much does it rain in Mertztown?
Throughout the year, there are 155.8 rainfall days, and 30.75" (781mm) of precipitation is accumulated.
When does it snow in Mertztown?
Months with snowfall are January through May, October through December.
How many days does it snow in Mertztown?
Throughout the year, in Mertztown, there are 29.4 snowfall days, and 15.87" (403mm) of snow is accumulated.
What is the month with the lowest UV index in Mertztown?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month in Mertztown?
February is the most humid month in Mertztown, with an average relative humidity of 82%.
What is the month with the least sunshine in Mertztown?
The month with the least sunshine in Mertztown is February, with an average of 4.4h of sunshine.
When does it snow the most in Mertztown?
March is the month with the most snowfall. Snow falls for 5.6 days and accumulates 4.29" (109mm) of snow.
When is Daylight Saving Time (DST) in Mertztown?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mertztown, 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 Mertztown?
April and July, with an average relative humidity of 76%, are the least humid months in Mertztown.
What is the wettest month in Mertztown?
April is the month with the most rainfall in Mertztown, Pennsylvania. Rain falls for 16.3 days and accumulates 2.99" (76mm) of precipitation.
When it does not snow in Mertztown?
June through September are months without snowfall.
When are the longest days in Mertztown?
June has the longest days of the year in Mertztown, Pennsylvania, with an average of 15h and 0min of daylight.
What are the months with the highest UV index in Mertztown?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What are the warmest months in Mertztown?
In Mertztown, the peak average temperatures are observed in July, with a high of 83.8°F (28.8°C) and a low of 63.5°F (17.5°C).
What month has the most sunshine in Mertztown?
The month with the most sunshine in Mertztown is July, with an average of 10.4h of sunshine.
What is the driest month in Mertztown?
September is the month with the least rainfall in Mertztown. Rain falls for 11.8 days and accumulates 1.77" (45mm) of precipitation.
What is the month with the shortest days in Mertztown?
With an average of 9h and 18min of daylight, December has the shortest days of the year in Mertztown, Pennsylvania.
Average temperature
Mertztown, PA
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.3°F).
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Mertztown, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.07"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:
29.96"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.03"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
Mertztown, PA
- Average wind speed in January:
8mph - Average wind speed in February:
7.8mph - Average wind speed in March:
8.1mph - Average wind speed in April:
7.9mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.4mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity
Mertztown, PA
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall
Mertztown, PA
- Average rainfall in January:
2.36" - Average rainfall in February:
2.13" - Average rainfall in March:
2.56" - Average rainfall in April:
2.99" - Average rainfall in May:
2.91" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.87" - Average rainfall in August:
2.87" - Average rainfall in September:
1.77" - Average rainfall in October:
2.68" - Average rainfall in November:
2.44" - Average rainfall in December:
2.68"
The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days
Mertztown, PA
- Average rainfall days in January:
8.5 days - Average rainfall days in February:
9.3 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
15.4 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
11.2 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.5 days).
Average snowfall
Mertztown, PA
- Average snowfall in January:
4.17" - Average snowfall in February:
3.78" - Average snowfall in March:
4.29" - Average snowfall in April:
0.2" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is March (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Mertztown, PA
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
8.4 days - Average snowfall days in March:
5.6 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0.1 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:
0.9 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mertztown, 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 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:
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 4min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days
Mertztown, PA
- Average sunshine days in January:
17 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.8 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
16.6 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (11.2 days).
Average UV index
Mertztown, PA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Mertztown, PA
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility
Mertztown, PA
The months with the highest visibility are April, June, July and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September, October and December (5mi).
Mertztown, Pennsylvania, USA
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