Climate and monthly weather forecastBristol, PA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Bristol, Pennsylvania, with an average temperature varying between 25.2°F (-3.8°C) and 37°F (2.8°C). January, having an average high-temperature of 37°F (2.8°C) and an average low-temperature of 25.2°F (-3.8°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Bristol, Pennsylvania, with an average temperature varying between 27°F (-2.8°C) and 40.6°F (4.8°C). The transition from January to February brings an average high-temperature of a still wintry 40.6°F (4.8°C), barely different from January's 37°F (2.8°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Bristol, Pennsylvania, with an average temperature ranging between max 48.7°F (9.3°C) and min 34.3°F (1.3°C). As March sets, the average high-temperature shows a slight increase, moving up from a cold 40.6°F (4.8°C) in February to a chilly 48.7°F (9.3°C). Weather in March »Weather in April
April in Bristol, Pennsylvania, is a refreshing spring month, with an average temperature ranging between max 61.2°F (16.2°C) and min 44.1°F (6.7°C). Bristol's transition into April brings a rise in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in March to a comfortable 61.2°F (16.2°C). Weather in April »Weather in May
May, the last month of the spring in Bristol, is a pleasant month, with an average temperature varying between 71.2°F (21.8°C) and 53.8°F (12.1°C). As April transitions into May, Bristol sees a rise in the average high-temperature, moving from an enjoyable 61.2°F (16.2°C) to a pleasant 71.2°F (21.8°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Bristol, Pennsylvania, with an average temperature ranging between min 61.7°F (16.5°C) and max 79.5°F (26.4°C). As Bristol welcomes June, the average high-temperature displays a subtle shift, adjusting from an agreeable 71.2°F (21.8°C) in May to a warm 79.5°F (26.4°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Bristol, Pennsylvania, with temperature in the range of an average low of 68°F (20°C) and an average high of 85.5°F (29.7°C). July, on average, is the warmest month, registering a high temperature of 85.5°F (29.7°C) and a low of 68°F (20°C). For July, the heat index is computed to be a torrid 95°F (35°C). Weather in July »Weather in August
August, the last month of the summer in Bristol, is another warm month, with an average temperature varying between 66.7°F (19.3°C) and 83.1°F (28.4°C). Bristol marks the onset of August with an average high-temperature of a still moderately hot 83.1°F (28.4°C), subtly divergent from July's 85.5°F (29.7°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Bristol, Pennsylvania, with an average temperature fluctuating between 76.5°F (24.7°C) and 59.9°F (15.5°C). September is characterized by a slight reduction in average high-temperature, easing from a moderately hot 83.1°F (28.4°C) in August to a still warm 76.5°F (24.7°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Bristol, Pennsylvania, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 64.2°F (17.9°C). October shows a mild decline in the average high-temperature, falling from September's moderately hot 76.5°F (24.7°C) to a refreshing 64.2°F (17.9°C). Weather in October »Weather in November
November, the last month of the autumn in Bristol, is also a fresh month, with an average temperature ranging between max 52.3°F (11.3°C) and min 38.7°F (3.7°C). A shift in the average high-temperature occurs in November, reducing from a comfortable 64.2°F (17.9°C) in October to a fresh 52.3°F (11.3°C). Weather in November »Weather in December
December, the first month of the winter in Bristol, is still a chilly month, with an average temperature ranging between max 43.7°F (6.5°C) and min 32.4°F (0.2°C). The arrival of December suggests a slight decrease in the average high-temperature, moving from a fresh 52.3°F (11.3°C) in November to a frosty 43.7°F (6.5°C). Weather in December »Updated: Jun 28, 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
The coldest period in Bristol tends to be January, when average temperatures fluctuate between a high of 37°F (2.8°C) and a low of 25.2°F (-3.8°C).
January is the month with the least rainfall. Rain falls for 8 days and accumulates 1.89" (48mm) of precipitation.
Throughout the year, there are 154.4 rainfall days, and 31.38" (797mm) of precipitation is accumulated.
January through May, November and December are months with snowfall.
Throughout the year, in Bristol, there are 15.9 snowfall days, and 8.5" (216mm) of snow is accumulated.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February and October, with an average relative humidity of 78%, are most humid months.
February has the least sunshine of the year, with an average of 4.8h of sunshine.
March is the month with the most snowfall. Snow falls for 3.3 days and accumulates 2.99" (76mm) of snow.
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.
April is the least humid month in Bristol, with an average relative humidity of 72%.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
In Bristol, snow does not fall in June through October.
The month with the longest days is June, with an average of 15h and 0min of daylight.
July, with its average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 68°F (20°C), holds the record as the warmest month.
July is the month with the most rainfall. Rain falls for 18.8 days and accumulates 3.66" (93mm) 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
Bristol, PA
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure
Bristol, PA
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"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 (29.93"Hg).
Average wind speed
Bristol, PA
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.3mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.4mph - Average wind speed in September:
6mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.4mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity
Bristol, PA
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall
Bristol, PA
- Average rainfall in January:
1.89" - Average rainfall in February:
2.13" - Average rainfall in March:
2.6" - Average rainfall in April:
2.44" - Average rainfall in May:
2.8" - Average rainfall in June:
2.64"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days
Bristol, PA
- Average rainfall days in January:
8 days - Average rainfall days in February:
8.5 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
18.8 days - Average rainfall days in August:
16 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
11.7 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).
Average snowfall
Bristol, PA
- Average snowfall in January:
1.57" - Average snowfall in February:
2.01" - Average snowfall in March:
2.99" - Average snowfall in April:
0.24" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Bristol, PA
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
0.3 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 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
2.8 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Bristol, 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 24min - 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:
10h and 0min - Average daylight in December:
9h and 24min
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 24min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 42min - 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 48min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h and 0min
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 48min).
Average sunshine days
Bristol, PA
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
16 days - Average sunshine days in March:
16.7 days - Average sunshine days in April:
14.4 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
9.9 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).
Average UV index
Bristol, PA
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
Bristol, PA
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Bristol, PA
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
