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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 a freezing cold winter month in Rossiter, Pennsylvania, with an average temperature fluctuating between 30.4°F (-0.9°C) and 18.3°F (-7.6°C). Rossiter notes the coldest temperatures in January, with a high average of 30.4°F (-0.9°C) and a low of 18.3°F (-7.6°C). Weather in January »
Weather in February
February, the last month of the winter in Rossiter, is an icy month, with an average temperature varying between 20.3°F (-6.5°C) and 34.7°F (1.5°C). Rossiter marks the onset of February with an average high-temperature of a cold 34.7°F (1.5°C), a subtle shift from January's 30.4°F (-0.9°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Rossiter, Pennsylvania, with an average temperature fluctuating between 44.2°F (6.8°C) and 28.2°F (-2.1°C). March's arrival is marked by an increase in the average high-temperature, moving from a wintry 34.7°F (1.5°C) in February to a chilly 44.2°F (6.8°C). Weather in March »
Weather in April
April in Rossiter, Pennsylvania, is a mild spring month, with an average temperature fluctuating between 37.9°F (3.3°C) and 56.8°F (13.8°C). Rossiter in April shows a temperature shift, moving from an average high of a frosty 44.2°F (6.8°C) in March to a mild 56.8°F (13.8°C). Weather in April »
Weather in May
May, the last month of the spring in Rossiter, is an agreeable month, with an average temperature fluctuating between 68.9°F (20.5°C) and 48.4°F (9.1°C). May sees a temperature increase, moving from a refreshing 56.8°F (13.8°C) in April to an agreeable 68.9°F (20.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Rossiter, Pennsylvania, with an average temperature ranging between min 54.1°F (12.3°C) and max 76.1°F (24.5°C). With the onset of June, Rossiter experiences a subtle temperature shift, with the average high-temperature moving from a pleasant 68.9°F (20.5°C) in May to a moderately hot 76.1°F (24.5°C). Weather in June »
Weather in July
July, like June, in Rossiter, Pennsylvania, is a moderately hot summer month, with an average temperature varying between 81°F (27.2°C) and 58.8°F (14.9°C). July, with an average high of 81°F (27.2°C) and a low of 58.8°F (14.9°C), signifies the warmest month of the year. In July, the heat index is appraised at a hot 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Rossiter, Pennsylvania, with an average temperature varying between 57°F (13.9°C) and 79.2°F (26.2°C). The arrival of August brings an average high-temperature of a still warm 79.2°F (26.2°C), subtly diverging from July's 81°F (27.2°C). Weather in August »
Weather in September
September, the first month of the autumn in Rossiter, is also an agreeable month, with an average temperature ranging between max 72.3°F (22.4°C) and min 52.5°F (11.4°C). A modest decline in the average high-temperature is seen during September, decreasing from a warm 79.2°F (26.2°C) in August to a pleasant 72.3°F (22.4°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Rossiter, Pennsylvania, with an average temperature varying between 43.5°F (6.4°C) and 59.4°F (15.2°C). The shift from September to October involves a decrease in the average high-temperature, from an agreeable 72.3°F (22.4°C) to a refreshing 59.4°F (15.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Rossiter, Pennsylvania, with an average temperature fluctuating between 46.2°F (7.9°C) and 32°F (0°C). The shift to November brings a decrease in the average high-temperature, falling from a mild 59.4°F (15.2°C) in October to a chilly 46.2°F (7.9°C). Weather in November »
Weather in December
December, the first month of the winter in Rossiter, is still a cold month, with an average temperature varying between 36.7°F (2.6°C) and 25.7°F (-3.5°C). Rossiter's progression into December involves a drop in the average high-temperature, receding from a frosty 46.2°F (7.9°C) in November to a wintry 36.7°F (2.6°C). Weather in December »
Updated: Jun 3, 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 are the coldest months?
The month of January sees the average lowest temperatures, reaching 30.4°F (-0.9°C) at the peak and 18.3°F (-7.6°C) at the low.
How many days does it rain?
Throughout the year, there are 151.9 rainfall days, and 22.13" (562mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall in Rossiter.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 18.6 days and accumulates 5.63" (143mm) of snow.
How many days does it snow?
In Rossiter, during the entire year, snow falls for 71 days and aggregates up to 22.32" (567mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 2.5h of sunshine.
What is the most humid month?
With an average relative humidity of 88%, February is the most humid month.
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 wettest month?
April is the month with the most rainfall. Rain falls for 16.3 days and accumulates 2.48" (63mm) of precipitation.
When is the highest UV index?
The months with the highest UV index in Rossiter are May through August, with an average maximum UV index of 5.
What is the least humid month?
The months with the lowest humidity are June through August, with an average relative humidity of 78%.
When it does not snow?
In Rossiter, snow does not fall in June through September.
When are the longest days?
With an average of 15h and 6min of daylight, June has the longest days of the year.
What part of the year is the hottest?
In Rossiter, July records the average highest temperatures, peaking at 81°F (27.2°C) and reaching a low of 58.8°F (14.9°C).
What is the month with the most sunshine?
July and August, with an average of 9.6h of sunshine, are months with the most sunshine.
What is the driest month?
The month with the least rainfall is November, when the rain falls for 9.1 days and typically collects 1.26" (32mm) of precipitation.
What is the month with the shortest days in Rossiter?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
When is the lowest UV index?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Rossiter, PA
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure
Rossiter, 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"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:
30.03"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
Rossiter, PA
- Average wind speed in January:
9.1mph - Average wind speed in February:
8.7mph - Average wind speed in March:
8.3mph - Average wind speed in April:
8.5mph - Average wind speed in May:
7mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.9mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity
Rossiter, PA
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall
Rossiter, PA
- Average rainfall in January:
1.54" - Average rainfall in February:
1.97" - Average rainfall in March:
1.61" - Average rainfall in April:
2.48" - Average rainfall in May:
2.36" - Average rainfall in June:
1.81"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.46" - Average rainfall in September:
1.65" - Average rainfall in October:
2.44" - Average rainfall in November:
1.26" - Average rainfall in December:
1.73"
The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days
Rossiter, PA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
18 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
15.9 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.8 days).
Average snowfall
Rossiter, PA
- Average snowfall in January:
5.63" - Average snowfall in February:
4.88" - Average snowfall in March:
2.64" - Average snowfall in April:
1.06" - Average snowfall in May:
0.55" - Average snowfall in June:
0"
The month with the highest snowfall is January (5.63").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Rossiter, PA
- Average snowfall days in January:
18.6 days - Average snowfall days in February:
15.2 days - Average snowfall days in March:
9.3 days - Average snowfall days in April:
3.8 days - Average snowfall days in May:
0.6 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:
1 days - Average snowfall days in November:
7.9 days - Average snowfall days in December:
14.6 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Rossiter, 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 3min - Average sunshine in February:
2h and 5min - Average sunshine in March:
5h and 0min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 1min - Average sunshine in June:
8h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 1min - Average sunshine in October:
4h and 4min - Average sunshine in November:
4h and 3min - Average sunshine in December:
2h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days
Rossiter, PA
- Average sunshine days in January:
8.2 days - Average sunshine days in February:
7.8 days - Average sunshine days in March:
11.5 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
10.7 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
14.1 days - Average sunshine days in December:
9.2 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).
Average UV index
Rossiter, 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
Rossiter, PA
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility
Rossiter, PA
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Rossiter, Pennsylvania, USA
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