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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 another subzero cold winter month in Sullivan, Ohio, with an average temperature varying between 18.5°F (-7.5°C) and 30.9°F (-0.6°C). With average temperatures fluctuating between a high of 30.9°F (-0.6°C) and a low of 18.5°F (-7.5°C), January stands out as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Sullivan, Ohio, with temperature in the range of an average low of 20.7°F (-6.3°C) and an average high of 35.1°F (1.7°C). February's average high-temperature is a wintry 35.1°F (1.7°C), maintaining a close comparison with January's 30.9°F (-0.6°C). Weather in February »
Weather in March
March, the first month of the spring in Sullivan, is a frosty month, with an average temperature varying between 30°F (-1.1°C) and 45.7°F (7.6°C). Sullivan's weather shows a temperature rise with the arrival of March, moving from a wintry 35.1°F (1.7°C) in February to a chilly 45.7°F (7.6°C). Weather in March »
Weather in April
April is a moderate spring month in Sullivan, Ohio, with an average temperature fluctuating between 39.6°F (4.2°C) and 57.9°F (14.4°C). The start of April brings a shift in the average high-temperature, increasing from March's chilly 45.7°F (7.6°C) to a mild 57.9°F (14.4°C). Weather in April »
Weather in May
May, the last month of the spring in Sullivan, is an agreeable month, with temperature in the range of an average low of 50.7°F (10.4°C) and an average high of 69.6°F (20.9°C). May's arrival signals a temperature shift, moving from a mild 57.9°F (14.4°C) in April to an agreeable 69.6°F (20.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Sullivan, Ohio, with an average temperature fluctuating between 76.8°F (24.9°C) and 58.5°F (14.7°C). Sullivan's June weather indicates a minor increase in high-temperatures, edging from May's pleasant 69.6°F (20.9°C) to a warm 76.8°F (24.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Sullivan, Ohio, with an average temperature ranging between max 80.6°F (27°C) and min 62.1°F (16.7°C). July brings the highest temperatures, with an average high of 80.6°F (27°C) and an average low of 62.1°F (16.7°C). For most parts of July, the heat index is calculated to be a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Sullivan, is another warm month, with an average temperature ranging between min 60.3°F (15.7°C) and max 79.2°F (26.2°C). The advent of August sees the average high-temperature at a still warm 79.2°F (26.2°C), subtly shifted from July's 80.6°F (27°C). Weather in August »
Weather in September
September, the first month of the autumn in Sullivan, is also a moderately hot month, with an average temperature varying between 54.5°F (12.5°C) and 73.4°F (23°C). Sullivan in September undergoes a slight reduction in the average high-temperature, shifting from August's moderately hot 79.2°F (26.2°C) to a still warm 73.4°F (23°C). Weather in September »
Weather in October
October, like September, in Sullivan, Ohio, is another comfortable autumn month, with temperature in the range of an average low of 44.8°F (7.1°C) and an average high of 61°F (16.1°C). Sullivan, Ohio, in October demonstrates a small temperature transition, adjusting from an average high of a moderately hot 73.4°F (23°C) in September to an enjoyable 61°F (16.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Sullivan, Ohio, with an average temperature varying between 33.8°F (1°C) and 47.7°F (8.7°C). Arrival of November comes with a reduction in the average high-temperature, falling from a refreshing 61°F (16.1°C) in October to a frosty 47.7°F (8.7°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Sullivan, Ohio, with an average temperature ranging between max 37.4°F (3°C) and min 26.8°F (-2.9°C). Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a chilly 47.7°F (8.7°C) to an icy 37.4°F (3°C). Weather in December »
Updated: Feb 13, 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 part of the year is the coldest in Sullivan?
Sullivan experiences its average lowest temperatures in January, reaching a peak of 30.9°F (-0.6°C) and a minimum of 18.5°F (-7.5°C).
How much does it rain in Sullivan?
In Sullivan, during the entire year, the rain falls for 128.1 days and collects up to 13.31" (338mm) of precipitation.
When does it snow in Sullivan?
January through May, October through December are months with snowfall in Sullivan.
How much does it snow in Sullivan?
Throughout the year, in Sullivan, Ohio, there are 38.5 snowfall days, and 5.55" (141mm) of snow is accumulated.
What is the month with the least sunshine in Sullivan?
The month with the least sunshine in Sullivan is January, with an average of 2.9h of sunshine.
What is the most humid month in Sullivan?
The most humid month in Sullivan is February, with an average relative humidity of 87%.
What is the driest month in Sullivan?
February is the month with the least rainfall in Sullivan, Ohio. Rain falls for 5.3 days and accumulates 0.75" (19mm) of precipitation.
What is the snowiest month in Sullivan?
The month with the most snowfall is February, when snow falls for 10.2 days and typically aggregates up to 1.81" (46mm) of snow.
When is Daylight Saving Time (DST) in Sullivan?
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 in Sullivan?
The months with the lowest humidity in Sullivan are April and November, with an average relative humidity of 78%.
When it does not snow in Sullivan?
June through September are months without snowfall.
When are the longest days in Sullivan?
The month with the longest days in Sullivan is June, with an average of 15h and 6min of daylight.
What time of the year is the hottest in Sullivan?
In Sullivan, July is the warmest month, with temperatures averaging a high of 80.6°F (27°C) and a low of 62.1°F (16.7°C).
What is the rainiest month in Sullivan?
The month with the most rainfall in Sullivan is July, when the rain falls for 14.8 days and typically aggregates up to 1.69" (43mm) of precipitation.
What is the month with the highest UV index in Sullivan?
July is the month with the highest UV index in Sullivan, Ohio, with an average maximum UV index of 6.
What month has the most sunshine in Sullivan?
The month with the most sunshine in Sullivan, Ohio, is August, with an average of 10h of sunshine.
What is the month with the shortest days in Sullivan?
With an average of 9h and 18min of daylight, December has the shortest days of the year in Sullivan, Ohio.
When is the lowest UV index in Sullivan?
December is the month with the lowest UV index in Sullivan, Ohio, with an average maximum UV index of 1.
Average temperature
Sullivan, OH
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.9°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 (18.5°F).
Average pressure
Sullivan, OH
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.97"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:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Sullivan, OH
- Average wind speed in January:
9.5mph - Average wind speed in February:
9mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.6mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.7mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity
Sullivan, OH
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and November (78%).
Average rainfall
Sullivan, OH
- Average rainfall in January:
0.79" - Average rainfall in February:
0.75" - Average rainfall in March:
0.98" - Average rainfall in April:
1.26" - Average rainfall in May:
1.42" - Average rainfall in June:
1.65"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.46" - Average rainfall in September:
0.83" - Average rainfall in October:
0.91" - Average rainfall in November:
0.79" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days
Sullivan, OH
- Average rainfall days in January:
4.9 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
14 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
15 days - Average rainfall days in September:
10.9 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
6.8 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (4.9 days).
Average snowfall
Sullivan, OH
- Average snowfall in January:
1.18" - Average snowfall in February:
1.81" - Average snowfall in March:
0.83" - Average snowfall in April:
0.2" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sullivan, OH
- Average snowfall days in January:
9.7 days - Average snowfall days in February:
10.2 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
1.9 days - Average snowfall days in May:
0.3 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:
3.6 days - Average snowfall days in December:
6.9 days
The month with the highest number of snowfall days is February (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sullivan, 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 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 5min - Average sunshine in February:
3h and 3min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 0min - Average sunshine in September:
7h and 5min - Average sunshine in October:
5h and 3min - Average sunshine in November:
4h and 4min - Average sunshine in December:
3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days
Sullivan, OH
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
14.7 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
13.6 days
- Average sunshine days in July:
12.5 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
19.6 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.8 days).
Average UV index
Sullivan, OH
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
Sullivan, OH
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Sullivan, OH
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Sullivan, Ohio, USA
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