Expand
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
Climate and monthly weather forecast
Weather in January
January, the same as December, in Jamestown, Pennsylvania, is another subzero cold winter month, with temperature in the range of an average low of 18.1°F (-7.7°C) and an average high of 30.6°F (-0.8°C). January stands out as Jamestown's coldest month, with an average high-temperature of 30.6°F (-0.8°C) and a low-temperature of 18.1°F (-7.7°C). Weather in January »
Weather in February
February, the last month of the winter in Jamestown, is a cold month, with temperature in the range of an average high of 34.3°F (1.3°C) and an average low of 19.8°F (-6.8°C). The introduction of February notes a subtle temperature variation to a cold 34.3°F (1.3°C) from January's 30.6°F (-0.8°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Jamestown, Pennsylvania, with an average temperature varying between 27.9°F (-2.3°C) and 44.2°F (6.8°C). Jamestown's weather shows a temperature rise with the arrival of March, moving from a wintry 34.3°F (1.3°C) in February to a frosty 44.2°F (6.8°C). Weather in March »
Weather in April
April in Jamestown, Pennsylvania, is a moderate spring month, with an average temperature fluctuating between 56.8°F (13.8°C) and 37.9°F (3.3°C). April's arrival is marked by an increase in the average high-temperature, moving from a chilly 44.2°F (6.8°C) in March to a mild 56.8°F (13.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Jamestown, Pennsylvania, with temperature in the range of an average high of 69.3°F (20.7°C) and an average low of 48.6°F (9.2°C). An increase in the average high-temperature marks May, moving from April's moderate 56.8°F (13.8°C) to a pleasant 69.3°F (20.7°C). Weather in May »
Weather in June
June, the first month of the summer in Jamestown, is a moderately hot month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 76.5°F (24.7°C). A subtle rise in the average high-temperature is observed during June, adjusting from a pleasant 69.3°F (20.7°C) in May to a warm 76.5°F (24.7°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Jamestown, Pennsylvania, with an average temperature varying between 80.8°F (27.1°C) and 59.5°F (15.3°C). Temperature readings reach their annual highs in July, averaging 80.8°F (27.1°C) and a minimum average of 59.5°F (15.3°C). The heat index for July is calculated to be a tropical 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Jamestown, Pennsylvania, with an average temperature ranging between max 79.3°F (26.3°C) and min 58.3°F (14.6°C). Upon the onset of August, Jamestown witnesses an average high-temperature of a still moderately hot 79.3°F (26.3°C), showing a close resemblance to the prior month. Weather in August »
Weather in September
September, the first month of the autumn in Jamestown, is still a pleasant month, with an average temperature ranging between max 72.7°F (22.6°C) and min 53.4°F (11.9°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 79.3°F (26.3°C) in August to an agreeable 72.7°F (22.6°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Jamestown, Pennsylvania, with an average temperature fluctuating between 59.7°F (15.4°C) and 43.9°F (6.6°C). The arrival of October indicates a decrease in the average high-temperature, moving from an agreeable 72.7°F (22.6°C) in September to a refreshing 59.7°F (15.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Jamestown, Pennsylvania, with an average temperature ranging between max 46.8°F (8.2°C) and min 32.7°F (0.4°C). The shift to November brings a decrease in the average high-temperature, falling from a refreshing 59.7°F (15.4°C) in October to a frosty 46.8°F (8.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Jamestown, Pennsylvania, with an average temperature varying between 37°F (2.8°C) and 26.4°F (-3.1°C). A moderate decline in the average high-temperature is seen during December, decreasing from a frosty 46.8°F (8.2°C) in November to a wintry 37°F (2.8°C). Weather in December »
Updated: Aug 7, 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 time of the year is the coldest?
Jamestown experiences its lowest temperatures in January, with an average peak of 30.6°F (-0.8°C) and a low of 18.1°F (-7.7°C).
How much does it rain in Jamestown?
In Jamestown, during the entire year, the rain falls for 167.1 days and collects up to 24.25" (616mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 19.9 days and typically aggregates up to 6.38" (162mm) of snow.
How much does it snow?
Throughout the year, there are 79.6 snowfall days, and 25" (635mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 2.4h of sunshine, January has the least sunshine of the year.
What is the most humid month?
The most humid month is February, with an average relative humidity of 89%.
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 least humid month?
The months with the lowest humidity are May through July, with an average relative humidity of 79%.
When it does not snow?
In Jamestown, snow does not fall in June through September.
When are the longest days?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What is the warmest month in Jamestown?
July brings the highest temperatures, with an average high of 80.8°F (27.1°C) and an average low of 59.5°F (15.3°C).
What is the month with the most sunshine?
The months with the most sunshine are July and August, with an average of 9.9h of sunshine.
What is the month with the highest UV index?
The month with the highest UV index is July, with an average maximum UV index of 6.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 13.8 days and typically collects 1.57" (40mm) of precipitation.
What is the wettest month?
October is the month with the most rainfall. Rain falls for 16.7 days and accumulates 2.52" (64mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
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
Jamestown, PA
The warmest month (with the highest average high temperature) is July (80.8°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 (18.1°F).
Average pressure
Jamestown, PA
- Average pressure in January:
30.09"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:
30.11"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Jamestown, PA
- Average wind speed in January:
8.1mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.5mph - Average wind speed in May:
6.4mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.6mph - Average wind speed in October:
6.7mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity
Jamestown, PA
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall
Jamestown, PA
- Average rainfall in January:
1.89" - Average rainfall in February:
1.69" - Average rainfall in March:
1.97" - Average rainfall in April:
2.36" - Average rainfall in May:
2.28" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.2" - Average rainfall in August:
1.81" - Average rainfall in September:
1.57" - Average rainfall in October:
2.52" - Average rainfall in November:
1.61" - Average rainfall in December:
1.85"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days
Jamestown, PA
- Average rainfall days in January:
8 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
17.6 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
13.8 days - Average rainfall days in October:
16.7 days - Average rainfall days in November:
11.9 days - Average rainfall days in December:
11.9 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8 days).
Average snowfall
Jamestown, PA
- Average snowfall in January:
6.38" - Average snowfall in February:
5.79" - Average snowfall in March:
2.83" - Average snowfall in April:
1.06" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is January (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Jamestown, PA
- Average snowfall days in January:
19.9 days - Average snowfall days in February:
17.5 days - Average snowfall days in March:
10.8 days - Average snowfall days in April:
4.4 days - Average snowfall days in May:
0.5 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:
0.7 days - Average snowfall days in November:
9.3 days - Average snowfall days in December:
16.5 days
The month with the highest number of snowfall days is January (19.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Jamestown, 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 1min
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 12min).
- Average sunshine in January:
2h and 2min - Average sunshine in February:
2h and 4min - Average sunshine in March:
5h and 1min - Average sunshine in April:
6h and 5min - 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
Jamestown, PA
- Average sunshine days in January:
7.2 days - Average sunshine days in February:
6.3 days - Average sunshine days in March:
10.1 days - Average sunshine days in April:
10.2 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
12.6 days - Average sunshine days in September:
12.5 days - Average sunshine days in October:
11.8 days - Average sunshine days in November:
12.5 days - Average sunshine days in December:
7.5 days
The month with the most sunshine days is August (12.6 days).
The month with the least sunshine days is February (6.3 days).
Average UV index
Jamestown, PA
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Jamestown, PA
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Jamestown, 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).