Climate and monthly weather forecastJefferson, IN
Climate and monthly weather forecast
Weather in January
January, like December, in Jefferson, Indiana, is another cold winter month, with an average temperature ranging between max 32°F (0°C) and min 19.8°F (-6.8°C). Jefferson's January weather reaches an average high of 32°F (0°C) and an average low of 19.8°F (-6.8°C), making it the coldest month. Weather in January »Weather in February
February, the last month of the winter in Jefferson, is also an icy month, with an average temperature varying between 36.3°F (2.4°C) and 23.4°F (-4.8°C). As January transitions into February, the average high-temperature rests at a still wintry 36.3°F (2.4°C), maintaining a close resemblance to the previous month. Weather in February »Weather in March
March, the first month of the spring in Jefferson, is a chilly month, with an average temperature ranging between max 48.6°F (9.2°C) and min 33.4°F (0.8°C). As March begins, there is an increase in the average high-temperature, moving from an icy 36.3°F (2.4°C) in February to a frosty 48.6°F (9.2°C). Weather in March »Weather in April
April is a mild spring month in Jefferson, Indiana, with an average temperature fluctuating between 44.2°F (6.8°C) and 60.3°F (15.7°C). The onset of April brings a temperature shift, with the average high-temperature moving from a chilly 48.6°F (9.2°C) in March to a refreshing 60.3°F (15.7°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Jefferson, Indiana, with an average temperature ranging between min 55°F (12.8°C) and max 71.4°F (21.9°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a mild 60.3°F (15.7°C) to a pleasant 71.4°F (21.9°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Jefferson, Indiana, with an average temperature varying between 62.6°F (17°C) and 79.2°F (26.2°C). June's onset witnesses a minor shift in the average high-temperature, moving from an agreeable 71.4°F (21.9°C) in May to a warm 79.2°F (26.2°C). Weather in June »Weather in July
July, like June, in Jefferson, Indiana, is another warm summer month, with an average temperature varying between 64°F (17.8°C) and 81°F (27.2°C). In Jefferson, the average temperatures in July are the highest, with a peak at 81°F (27.2°C) and a low of 64°F (17.8°C). The heat index value during July is estimated at a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Jefferson, Indiana, with an average temperature ranging between min 62.6°F (17°C) and max 79.7°F (26.5°C). Welcoming August, Jefferson notes an average high-temperature of a still moderately hot 79.7°F (26.5°C), nearly consistent with July's 81°F (27.2°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Jefferson, Indiana, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 75°F (23.9°C). Jefferson's weather in September, with an average high-temperature of a still moderately hot 75°F (23.9°C), subtly shifts from August's 79.7°F (26.5°C). Weather in September »Weather in October
October, like September, in Jefferson, Indiana, is another comfortable autumn month, with an average temperature fluctuating between 46.4°F (8°C) and 61.9°F (16.6°C). October implies a gentle temperature shift, with average high-temperatures reducing from September's moderately hot 75°F (23.9°C) to a comfortable 61.9°F (16.6°C). Weather in October »Weather in November
November, the last month of the autumn in Jefferson, is another chilly month, with an average temperature varying between 35.1°F (1.7°C) and 48.2°F (9°C). Setting in of November comes with a decrease in the average high-temperature, moving from a comfortable 61.9°F (16.6°C) in October to a chilly 48.2°F (9°C). Weather in November »Weather in December
December, the first month of the winter in Jefferson, is still a cold month, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 27.3°F (-2.6°C). Jefferson in December demonstrates a small temperature transition, adjusting from an average high of a chilly 48.2°F (9°C) in November to a wintry 37.6°F (3.1°C). Weather in December »Updated: Aug 17, 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
Jefferson reaches its average lowest temperatures in January, measuring 32°F (0°C) at the peak and 19.8°F (-6.8°C) at the lowest.
In Jefferson, during the entire year, the rain falls for 139.5 days and collects up to 18.07" (459mm) of precipitation.
January through April, October through December are months with snowfall.
Throughout the year, there are 28.4 snowfall days, and 7.44" (189mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 3.8h of sunshine.
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.94" (24mm) of precipitation.
February is the month with the most snowfall. Snow falls for 7.3 days and accumulates 2.2" (56mm) 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.
May through September are months without snowfall.
June is the month with the most rainfall. Rain falls for 15.4 days and accumulates 2.28" (58mm) of precipitation.
With an average of 15h and 0min of daylight, June has the longest days of the year.
June and July, with an average of 10h of sunshine, are months with the most sunshine.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
The warmest temperatures occur during July, when averages reach a peak of 81°F (27.2°C) and a low of 64°F (17.8°C).
With an average relative humidity of 84%, July is the most humid month.
The least humid month is October, with an average relative humidity of 73%.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Jefferson, IN
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Jefferson, IN
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Jefferson, IN
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Jefferson, IN
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Jefferson, IN
- Average rainfall in January:
1.22" - Average rainfall in February:
0.94" - Average rainfall in March:
1.54" - Average rainfall in April:
2.2" - Average rainfall in May:
2.24" - Average rainfall in June:
2.28"
- Average rainfall in July:
1.54" - Average rainfall in August:
1.57" - Average rainfall in September:
1.22" - Average rainfall in October:
1.14" - Average rainfall in November:
1.02" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days
Jefferson, IN
- Average rainfall days in January:
6.1 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
11.7 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
11 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall
Jefferson, IN
The month with the highest snowfall is February (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Jefferson, IN
- Average snowfall days in January:
8.4 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
1 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:
0.3 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
5.3 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Jefferson, IN
- 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:
3h and 48min - Average sunshine in February:
4h and 54min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 36min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 18min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Jefferson, IN
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
16 days - Average sunshine days in March:
16.5 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
12 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
19 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.8 days).
Average UV index
Jefferson, IN
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
Jefferson, IN
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Jefferson, IN
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
