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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 Port Jefferson, Ohio, is another cold winter month, with an average temperature varying between 20.1°F (-6.6°C) and 32°F (0°C). January, with its average high-temperature of 32°F (0°C) and an average low-temperature of 20.1°F (-6.6°C), holds the record as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Port Jefferson, Ohio, with temperature in the range of an average low of 23.7°F (-4.6°C) and an average high of 36.3°F (2.4°C). The arrival of February coincides with an average high-temperature of a still wintry 36.3°F (2.4°C), indicating a minimal shift from January's 32°F (0°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Port Jefferson, Ohio, with an average temperature varying between 32.5°F (0.3°C) and 47.5°F (8.6°C). With the onset of March, Port Jefferson's weather sees a temperature rise, transitioning from an icy 36.3°F (2.4°C) in February to a frosty 47.5°F (8.6°C). Weather in March »
Weather in April
April in Port Jefferson, Ohio, is a moderate spring month, with an average temperature fluctuating between 59.5°F (15.3°C) and 42.6°F (5.9°C). Port Jefferson's transition into April is marked by a temperature shift, moving from a chilly 47.5°F (8.6°C) in March to a mild 59.5°F (15.3°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Port Jefferson, Ohio, with an average temperature fluctuating between 70.3°F (21.3°C) and 54°F (12.2°C). The start of May brings a shift in the average high-temperature, increasing from April's moderate 59.5°F (15.3°C) to a pleasant 70.3°F (21.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Port Jefferson, Ohio, with an average temperature ranging between max 77.7°F (25.4°C) and min 61°F (16.1°C). The shift into June is characterized by a subtle rise in the average high-temperature, transitioning from May's pleasant 70.3°F (21.3°C) to a warm 77.7°F (25.4°C). Weather in June »
Weather in July
July, like June, in Port Jefferson, Ohio, is a moderately hot summer month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 63.7°F (17.6°C). July stands out as Port Jefferson's warmest month, with an average high-temperature of 80.2°F (26.8°C) and a low-temperature of 63.7°F (17.6°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Port Jefferson, Ohio, with an average temperature ranging between max 79.2°F (26.2°C) and min 61.3°F (16.3°C). Port Jefferson observes an average high-temperature of a still moderately hot 79.2°F (26.2°C) in August, barely different from 80.2°F (26.8°C) in July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Port Jefferson, Ohio, with an average temperature varying between 56.1°F (13.4°C) and 73.6°F (23.1°C). In Port Jefferson, the average high-temperature in September slightly decreases from a warm 79.2°F (26.2°C) in August to a still moderately hot 73.6°F (23.1°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Port Jefferson, Ohio, with an average temperature varying between 61.7°F (16.5°C) and 46°F (7.8°C). With October's arrival, Port Jefferson's weather changes as the average high-temperature falls from a warm 73.6°F (23.1°C) in September to a comfortable 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Port Jefferson, Ohio, with an average temperature fluctuating between 48.4°F (9.1°C) and 34.9°F (1.6°C). Port Jefferson's weather changes with the onset of November, slightly falling from a refreshing 61.7°F (16.5°C) in October to a frosty 48.4°F (9.1°C). Weather in November »
Weather in December
December, the first month of the winter in Port Jefferson, is also an icy month, with an average temperature fluctuating between 27.5°F (-2.5°C) and 37.8°F (3.2°C). In December, the average high-temperature goes from a chilly 48.4°F (9.1°C) in November to a cold 37.8°F (3.2°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Port Jefferson?
Port Jefferson records the coldest temperatures in January, averaging a high of 32°F (0°C) and a low of 20.1°F (-6.6°C).
What is the most humid month in Port Jefferson?
January, February and December, with an average relative humidity of 83%, are most humid months.
How much does it rain in Port Jefferson?
In Port Jefferson, Ohio, during the entire year, the rain falls for 111.7 days and collects up to 8.58" (218mm) of precipitation.
When does it snow in Port Jefferson?
January through May, October through December are months with snowfall in Port Jefferson, Ohio.
How much does it snow in Port Jefferson?
Throughout the year, in Port Jefferson, there are 27.1 snowfall days, and 2.8" (71mm) of snow is accumulated.
What is the month with the least sunshine in Port Jefferson?
January has the least sunshine of the year in Port Jefferson, with an average of 3.5h of sunshine.
What is the month with the lowest UV index in Port Jefferson?
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Port Jefferson, Ohio.
What is the snowiest month in Port Jefferson?
February is the month with the most snowfall in Port Jefferson. Snow falls for 6.8 days and accumulates 0.79" (20mm) of snow.
When is Daylight Saving Time (DST) in Port Jefferson?
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 rainiest month in Port Jefferson?
The months with the most rainfall are May and June, with an average 1.06" (27mm) of precipitation.
When it does not snow in Port Jefferson?
June through September are months without snowfall.
When are the longest days in Port Jefferson?
With an average of 15h and 0min of daylight, June has the longest days of the year in Port Jefferson, Ohio.
When is the highest UV index in Port Jefferson?
The months with the highest UV index in Port Jefferson are June through August, with an average maximum UV index of 6.
What is the hottest time of year in Port Jefferson?
July, with average temperatures reaching a high of 80.2°F (26.8°C) and a low of 63.7°F (17.6°C), is the warmest month in Port Jefferson.
What month has the most sunshine in Port Jefferson?
With an average of 10.1h of sunshine, July has the most sunshine of the year in Port Jefferson, Ohio.
What is the least humid month in Port Jefferson?
The least humid month in Port Jefferson, Ohio, is October, with an average relative humidity of 75%.
What is the driest month in Port Jefferson?
The month with the least rainfall in Port Jefferson, Ohio, is November, when the rain falls for 6.2 days and typically collects 0.47" (12mm) of precipitation.
What is the month with the shortest days in Port Jefferson?
December has the shortest days of the year in Port Jefferson, Ohio, with an average of 9h and 24min of daylight.
Average temperature
Port Jefferson, OH
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (32°F).
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure
Port Jefferson, OH
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Port Jefferson, OH
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.4mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.6mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity
Port Jefferson, OH
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Port Jefferson, OH
- Average rainfall in January:
0.59" - Average rainfall in February:
0.59" - Average rainfall in March:
0.63" - Average rainfall in April:
0.75" - Average rainfall in May:
1.06" - Average rainfall in June:
1.06"
- Average rainfall in July:
0.91" - Average rainfall in August:
0.83" - Average rainfall in September:
0.51" - Average rainfall in October:
0.63" - Average rainfall in November:
0.47" - Average rainfall in December:
0.55"
The wettest months (with the highest rainfall) are May and June (1.06").
The driest month (with the least rainfall) is November (0.47").
Average rainfall days
Port Jefferson, OH
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
5 days - Average rainfall days in March:
9.9 days - Average rainfall days in April:
11.4 days - Average rainfall days in May:
13.2 days - Average rainfall days in June:
10.8 days
- Average rainfall days in July:
12.9 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
7.9 days - Average rainfall days in November:
6.2 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (5 days).
Average snowfall
Port Jefferson, OH
- Average snowfall in January:
0.63" - Average snowfall in February:
0.79" - Average snowfall in March:
0.31" - Average snowfall in April:
0.12" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Port Jefferson, OH
- Average snowfall days in January:
7.5 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
3.2 days - Average snowfall days in April:
1 days - Average snowfall days in May:
0.2 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:
0.4 days - Average snowfall days in November:
1.9 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Port Jefferson, OH
- 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 2min - 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:
10h and 0min - 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 24min).
- Average sunshine in January:
3h and 3min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 1min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Port Jefferson, OH
- Average sunshine days in January:
19.7 days - Average sunshine days in February:
18.2 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
16.2 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
13.6 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
21.8 days - Average sunshine days in December:
21 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index
Port Jefferson, OH
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Port Jefferson, OH
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Port Jefferson, OH
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Port Jefferson, Ohio, USA
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