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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, the same as December, in Old Jefferson, Louisiana, is another mild winter month, with an average temperature ranging between min 43.2°F (6.2°C) and max 59°F (15°C). With its high average temperature of 59°F (15°C) and a low of 43.2°F (6.2°C), January is regarded as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a refreshing month in Old Jefferson, Louisiana, with an average temperature varying between 64°F (17.8°C) and 48.2°F (9°C). The shift into February reveals an average high-temperature of a still refreshing 64°F (17.8°C), closely mirroring January's climate. Weather in February »
Weather in March
The first month of the spring, March, is a pleasant month in Old Jefferson, Louisiana, with an average temperature varying between 53.2°F (11.8°C) and 71.4°F (21.9°C). March's arrival sees a mild rise in the average high-temperature, transitioning from February's enjoyable 64°F (17.8°C) to a pleasant 71.4°F (21.9°C). Weather in March »
Weather in April
April in Old Jefferson, Louisiana, is a warm spring month, with an average temperature varying between 58.8°F (14.9°C) and 78.4°F (25.8°C). April's arrival sees a mild rise in the average high-temperature, transitioning from March's agreeable 71.4°F (21.9°C) to a warm 78.4°F (25.8°C). Weather in April »
Weather in May
May, the last month of the spring in Old Jefferson, is another warm month, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 66°F (18.9°C). With the onset of May, Old Jefferson observes a minor temperature ascent, with the average high-temperature adjusting from April's 78.4°F (25.8°C) to a still moderately hot 85.3°F (29.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a hot month in Old Jefferson, Louisiana, with an average temperature varying between 72.1°F (22.3°C) and 90.7°F (32.6°C). The shift from May to June sees a slight increase in the average high-temperature, transitioning from a warm 85.3°F (29.6°C) to a hot 90.7°F (32.6°C). Weather in June »
Weather in July
July, like June, is another hot summer month in Old Jefferson, Louisiana, with an average temperature ranging between max 91.6°F (33.1°C) and min 74.3°F (23.5°C). July stands out as Old Jefferson's warmest month, with an average high-temperature of 91.6°F (33.1°C) and a low-temperature of 74.3°F (23.5°C). The heat index in July is evaluated at a blazing hot 118.4°F (48°C). Weather in July »
Weather in August
August, the last month of the summer in Old Jefferson, is another tropical month, with an average temperature fluctuating between 91.2°F (32.9°C) and 74.7°F (23.7°C). The arrival of August coincides with an average high-temperature of a still hot 91.2°F (32.9°C), indicating a minimal shift from July's 91.6°F (33.1°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a hot month in Old Jefferson, Louisiana, with an average temperature ranging between min 70.3°F (21.3°C) and max 87.8°F (31°C). An average high-temperature of a still hot 87.8°F (31°C) marks September, exhibiting a close resemblance to the conditions in August. Weather in September »
Weather in October
October, like September, in Old Jefferson, Louisiana, is another warm autumn month, with an average temperature fluctuating between 60.3°F (15.7°C) and 80.1°F (26.7°C). In October, the meteorological conditions change slightly, with the average high-temperature moving from a tropical 87.8°F (31°C) in September to a moderately hot 80.1°F (26.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Old Jefferson, is also an agreeable month, with temperature in the range of an average high of 68.9°F (20.5°C) and an average low of 50.5°F (10.3°C). The beginning of November marks a decrease in the average high-temperature, transitioning from a moderately hot 80.1°F (26.7°C) in October to an agreeable 68.9°F (20.5°C). Weather in November »
Weather in December
December, the first month of the winter in Old Jefferson, is still a refreshing month, with an average temperature varying between 46.9°F (8.3°C) and 61.9°F (16.6°C). December's arrival signals a moderate reduction in the average high-temperature, easing from a pleasant 68.9°F (20.5°C) in November to a refreshing 61.9°F (16.6°C). Weather in December »
Updated: Jun 25, 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?
January proves to be the coldest month, recording an average maximum temperature of 59°F (15°C) and a minimum temperature of 43.2°F (6.2°C).
How much does it rain?
In Old Jefferson, during the entire year, the rain falls for 187.5 days and collects up to 40" (1016mm) of precipitation.
When does it snow?
January and December are months with snowfall.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 0.3 days and typically aggregates up to 0.2" (5mm) of snow.
How many days does it snow?
Throughout the year, there are 0.4 snowfall days, and 0.24" (6mm) of snow is accumulated.
What are the most humid months?
February and December, with an average relative humidity of 81%, are most humid months in Old Jefferson, Louisiana.
When it does not snow?
February through November are months without snowfall.
When is Daylight Saving Time (DST) in Old Jefferson?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Old Jefferson, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
When is the highest UV index?
May through August, with an average maximum UV index of 7, are months with the highest UV index in Old Jefferson.
When are the longest days?
The month with the longest days is June, with an average of 14h and 6min of daylight.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 10.4h of sunshine.
What are the warmest months?
Old Jefferson's warmest month, July, registers temperatures that range from a high of 91.6°F (33.1°C) to a low of 74.3°F (23.5°C).
What is the wettest month?
The month with the most rainfall is July, when the rain falls for 23.7 days and typically aggregates up to 5.47" (139mm) of precipitation.
What is the least humid month?
October is the least humid month, with an average relative humidity of 73%.
What is the driest month?
The month with the least rainfall is November, when the rain falls for 8.9 days and typically collects 1.93" (49mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 10h and 12min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5h of sunshine.
What is the month with the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 3.
Average temperature
Old Jefferson, LA
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (59°F).
The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).
Average pressure
Old Jefferson, LA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).
Average wind speed
Old Jefferson, LA
- Average wind speed in January:
6.6mph - Average wind speed in February:
6.8mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.7mph - Average wind speed in May:
5.5mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.7mph - Average wind speed in October:
5.5mph - Average wind speed in November:
6mph - Average wind speed in December:
6.5mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity
Old Jefferson, LA
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Old Jefferson, LA
- Average rainfall in January:
3.07" - Average rainfall in February:
2.8" - Average rainfall in March:
2.32" - Average rainfall in April:
2.99" - Average rainfall in May:
3.35" - Average rainfall in June:
3.43"
- Average rainfall in July:
5.47" - Average rainfall in August:
5.16" - Average rainfall in September:
3.27" - Average rainfall in October:
2.8" - Average rainfall in November:
1.93" - Average rainfall in December:
3.43"
The wettest month (with the highest rainfall) is July (5.47").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days
Old Jefferson, LA
- Average rainfall days in January:
12.1 days - Average rainfall days in February:
12.9 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
15.2 days - Average rainfall days in June:
20.3 days
- Average rainfall days in July:
23.7 days - Average rainfall days in August:
23.8 days - Average rainfall days in September:
18.6 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
14.3 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall
Old Jefferson, LA
The month with the highest snowfall is January (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Old Jefferson, LA
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 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 days - Average snowfall days in December:
0.1 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Old Jefferson, LA
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 1min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 4min - Average daylight in June:
14h and 1min
- Average daylight in July:
13h and 5min - Average daylight in August:
13h and 1min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 4min - Average daylight in December:
10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
5h and 2min - Average sunshine in March:
7h and 4min - Average sunshine in April:
9h and 1min - Average sunshine in May:
9h and 5min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 4min - Average sunshine in October:
6h and 5min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days
Old Jefferson, LA
- Average sunshine days in January:
17.7 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
16.6 days - Average sunshine days in April:
16.1 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
8.4 days
- Average sunshine days in July:
5.9 days - Average sunshine days in August:
6.3 days - Average sunshine days in September:
9.5 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
15.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (5.9 days).
Average UV index
Old Jefferson, LA
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Old Jefferson, LA
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility
Old Jefferson, LA
The months with the highest visibility are January, October, November and December (6mi).
The months with the lowest visibility are February, March, April, May, June, July, August and September (5mi).
Old Jefferson, Louisiana, USA
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