Climate and monthly weather forecastMillerstown, PA
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Millerstown, Pennsylvania, with an average temperature ranging between min 21.6°F (-5.8°C) and max 33.6°F (0.9°C). With average temperatures fluctuating between a high of 33.6°F (0.9°C) and a low of 21.6°F (-5.8°C), January stands out as the coldest month. Weather in January »Weather in February
February, the last month of the winter in Millerstown, is another cold month, with temperature in the range of an average low of 23°F (-5°C) and an average high of 37.8°F (3.2°C). February commences with an average high-temperature of a still cold 37.8°F (3.2°C), showing little deviation from January's 33.6°F (0.9°C). Weather in February »Weather in March
March, the first month of the spring in Millerstown, is a chilly month, with an average temperature varying between 30.9°F (-0.6°C) and 46.9°F (8.3°C). Millerstown's weather in March shows a rise in the average high-temperature, moving up from February's wintry 37.8°F (3.2°C) to a chilly 46.9°F (8.3°C). Weather in March »Weather in April
April is a refreshing spring month in Millerstown, Pennsylvania, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 59.5°F (15.3°C). April's arrival is marked by an increase in the average high-temperature, moving from a chilly 46.9°F (8.3°C) in March to a refreshing 59.5°F (15.3°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Millerstown, Pennsylvania, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 70.2°F (21.2°C). As May begins, there is an increase in the average high-temperature, moving from a refreshing 59.5°F (15.3°C) in April to a pleasant 70.2°F (21.2°C). Weather in May »Weather in June
June, the first month of the summer in Millerstown, is a warm month, with an average temperature ranging between min 57.2°F (14°C) and max 78.4°F (25.8°C). Millerstown experiences a minor temperature shift with the start of June, with average high-temperatures moving from a pleasant 70.2°F (21.2°C) in May to a warm 78.4°F (25.8°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Millerstown, Pennsylvania, with an average temperature fluctuating between 83.8°F (28.8°C) and 62.1°F (16.7°C). During the warmest month, July, temperatures average a high of 83.8°F (28.8°C) and a low of 62.1°F (16.7°C). Throughout July, the heat index is estimated at a tropical 91.4°F (33°C). Weather in July »Weather in August
August, the last month of the summer in Millerstown, is also a moderately hot month, with an average temperature fluctuating between 59.9°F (15.5°C) and 81.7°F (27.6°C). The commencement of August records an average high-temperature of a still warm 81.7°F (27.6°C), barely varying from July's 83.8°F (28.8°C). Weather in August »Weather in September
September, the first month of the autumn in Millerstown, is still a warm month, with an average temperature fluctuating between 74.3°F (23.5°C) and 54.3°F (12.4°C). September is characterized by a slight reduction in average high-temperature, easing from a warm 81.7°F (27.6°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Millerstown, Pennsylvania, with an average temperature fluctuating between 45.3°F (7.4°C) and 61.9°F (16.6°C). October brings a minor decrease, with the average high-temperature reducing from a warm 74.3°F (23.5°C) in September to a comfortable 61.9°F (16.6°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Millerstown, Pennsylvania, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 49.5°F (9.7°C). The beginning of November involves a decrease in the average high-temperature, transitioning from a comfortable 61.9°F (16.6°C) in October to a frosty 49.5°F (9.7°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Millerstown, Pennsylvania, with temperature in the range of an average high of 39.7°F (4.3°C) and an average low of 28.6°F (-1.9°C). With the onset of December, Millerstown experiences a modest temperature adjustment, with the average high-temperature receding from a frosty 49.5°F (9.7°C) in November to an icy 39.7°F (4.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Millerstown, 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 (33.6°F).
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Millerstown, 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:
29.98"Hg - Average pressure in May:
30.01"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:
30.06"Hg - Average pressure in October:
30.04"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 (29.95"Hg).
Average wind speed
Millerstown, PA
- Average wind speed in January:
7.5mph - Average wind speed in February:
7.5mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.6mph - Average wind speed in May:
5.9mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
4.6mph - Average wind speed in August:
4.4mph - Average wind speed in September:
5mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.5mph - Average wind speed in December:
7mph
The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity
Millerstown, PA
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Millerstown, PA
- Average rainfall in January:
2.05" - Average rainfall in February:
2.01" - Average rainfall in March:
2.17" - Average rainfall in April:
2.87" - Average rainfall in May:
3.11" - Average rainfall in June:
2.28"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.6" - Average rainfall in September:
2.09" - Average rainfall in October:
2.56" - Average rainfall in November:
2.13" - Average rainfall in December:
2.13"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days
Millerstown, PA
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
17.1 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
13 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
10.6 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Millerstown, PA
The month with the highest snowfall is February (3.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Millerstown, PA
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
9 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
0.9 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:
1.2 days - Average snowfall days in December:
6 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Millerstown, PA
- Average daylight in January:
9h and 42min - 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 30min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - 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:
9h and 54min - Average daylight in December:
9h and 18min
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 12min - Average sunshine in February:
4h and 12min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 12min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 12min).
Average sunshine days
Millerstown, PA
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
12.1 days - Average sunshine days in March:
13.3 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
12.7 days - Average sunshine days in August:
14.5 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
15.9 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
15.1 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index
Millerstown, PA
The months with the highest UV index are May, 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
Millerstown, PA
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility
Millerstown, PA
The months with the highest visibility are March, April, June, July, November and December (6mi).
The months with the lowest visibility are January, February, May, August, September and October (5mi).





