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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 Dean, Louisiana, is another fresh winter month, with an average temperature varying between 37.9°F (3.3°C) and 53.2°F (11.8°C). With an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 37.9°F (3.3°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a mild month in Dean, Louisiana, with an average temperature fluctuating between 57°F (13.9°C) and 41.9°F (5.5°C). February brings a marginal elevation to a mild 57°F (13.9°C) from January's 53.2°F (11.8°C) in Dean's average high-temperatures. Weather in February »
Weather in March
March, the first month of the spring in Dean, is an enjoyable month, with an average temperature ranging between min 48.6°F (9.2°C) and max 65.8°F (18.8°C). The start of March brings a subtle rise in the average high-temperature, moving from a moderate 57°F (13.9°C) in February to a comfortable 65.8°F (18.8°C). Weather in March »
Weather in April
April in Dean, Louisiana, is a moderately hot spring month, with an average temperature fluctuating between 54.9°F (12.7°C) and 75.2°F (24°C). In April, the meteorological conditions change with the average high-temperature moving from a refreshing 65.8°F (18.8°C) in March to a moderately hot 75.2°F (24°C). Weather in April »
Weather in May
The last month of the spring, May, is also a moderately hot month in Dean, Louisiana, with an average temperature varying between 63.3°F (17.4°C) and 83.8°F (28.8°C). May introduces a marginal temperature uplift, with average high-temperatures adjusting from April's warm 75.2°F (24°C) to a still moderately hot 83.8°F (28.8°C). Weather in May »
Weather in June
June, the first month of the summer in Dean, is a tropical month, with temperature in the range of an average low of 71.1°F (21.7°C) and an average high of 91.4°F (33°C). The arrival of June introduces a minor uplift in high-temperatures, adjusting from a moderately hot 83.8°F (28.8°C) in May to a hot 91.4°F (33°C). Weather in June »
Weather in July
July, like June, is a hot summer month in Dean, Louisiana, with temperature in the range of an average high of 93.7°F (34.3°C) and an average low of 73°F (22.8°C). The highest point of temperatures falls in July and August, when the average high-temperature ascends to 93.7°F (34.3°C). The heat index in July is calculated to be a life-threatening hot 118.4°F (48°C). Weather in July »
Weather in August
August, the last month of the summer in Dean, is another hot month, with an average temperature fluctuating between 93.7°F (34.3°C) and 72.7°F (22.6°C). July and August are identified as the warmest months, with an average high-temperature of 93.7°F (34.3°C). Throughout August, the heat index is calculated to be a blazing hot 118.4°F (48°C). Weather in August »
Weather in September
September, the first month of the autumn in Dean, is still a tropical month, with an average temperature ranging between min 67.1°F (19.5°C) and max 87.8°F (31°C). September's arrival subtly correlates with a reduction in the average high-temperature, down from a tropical 93.7°F (34.3°C) in August to a still hot 87.8°F (31°C). Weather in September »
Weather in October
October, the same as September, is another warm autumn month in Dean, Louisiana, with an average temperature varying between 76.3°F (24.6°C) and 56.1°F (13.4°C). The shift from September to October corresponds with a decrease in the average high-temperature, down to a moderately hot 76.3°F (24.6°C) from a hot 87.8°F (31°C). Weather in October »
Weather in November
November, the last month of the autumn in Dean, is another comfortable month, with an average temperature ranging between max 63.7°F (17.6°C) and min 46.6°F (8.1°C). Dean observes a minor decrease in the average high-temperature with the arrival of November, falling from October's moderately hot 76.3°F (24.6°C) to an enjoyable 63.7°F (17.6°C). Weather in November »
Weather in December
The first month of the winter, December, is also a moderate month in Dean, Louisiana, with an average temperature varying between 41.5°F (5.3°C) and 55.6°F (13.1°C). The average high-temperature shows a slight dip in December, from November's 63.7°F (17.6°C) to a still refreshing 55.6°F (13.1°C). Weather in December »
Updated: Jun 4, 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 time of the year is the coldest?
In Dean, January is the coldest month, with temperatures averaging a high of 53.2°F (11.8°C) and a low of 37.9°F (3.3°C).
How many days does it rain?
In Dean, during the entire year, the rain falls for 155.8 days and collects up to 37.13" (943mm) of precipitation.
When does it snow?
Months with snowfall are January, February and December.
How many days does it snow?
Throughout the year, there are 1.6 snowfall days, and 0.35" (9mm) of snow is accumulated.
What are the months with the lowest UV index?
January and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the most humid month in Dean?
The most humid month is February, with an average relative humidity of 82%.
When does it snow the most?
The month with the most snowfall in Dean is February, when snow falls for 0.8 days and typically aggregates up to 0.2" (5mm) of snow.
What is the month with the least sunshine?
The months with the least sunshine are February and December, with an average of 4.9h of sunshine.
When it does not snow?
March through November are months without snowfall.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
What is the wettest month?
The month with the most rainfall is April, when the rain falls for 14.5 days and typically aggregates up to 4.25" (108mm) of precipitation.
What is the month with the highest UV index in Dean?
The months with the highest UV index are May through August, with an average maximum UV index of 7.
When are the longest days?
With an average of 14h and 18min of daylight, June has the longest days of the year.
What is the hottest time of year?
Dean witnesses its average highest temperatures during July and August, peaking at 93.7°F (34.3°C).
What is the least humid month?
July through October, with an average relative humidity of 71%, are the least humid months.
What are the months with the most sunshine?
July and August, with an average of 10.5h of sunshine, are months with the most sunshine.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.77" (45mm) of precipitation.
What is the month with the shortest days?
With an average of 10h and 0min of daylight, December has the shortest days of the year.
Average temperature
Dean, LA
The warmest months (with the highest average high temperature) are July and August (93.7°F).
The month with the lowest average high temperature is January (53.2°F).
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure
Dean, LA
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Dean, LA
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.5mph - Average wind speed in March:
6.6mph - Average wind speed in April:
6.9mph - Average wind speed in May:
6mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
4.8mph - Average wind speed in October:
5.5mph - Average wind speed in November:
5.9mph - Average wind speed in December:
6mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Dean, LA
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August, September and October (71%).
Average rainfall
Dean, LA
- Average rainfall in January:
3.11" - Average rainfall in February:
3.98" - Average rainfall in March:
3.74" - Average rainfall in April:
4.25" - Average rainfall in May:
3.19" - Average rainfall in June:
3.03"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.48" - Average rainfall in September:
1.77" - Average rainfall in October:
3.15" - Average rainfall in November:
2.32" - Average rainfall in December:
3.35"
The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days
Dean, LA
- Average rainfall days in January:
11.5 days - Average rainfall days in February:
12.4 days - Average rainfall days in March:
14.8 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
14.5 days
- Average rainfall days in July:
14.5 days - Average rainfall days in August:
15.1 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
9.6 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
12.4 days
The month with the highest number of rainy days is August (15.1 days).
The month with the least rainy days is November (9.1 days).
Average snowfall
Dean, LA
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Dean, LA
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.8 days - Average snowfall days in March:
0.1 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:
0.1 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Dean, LA
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 3min - Average sunshine in September:
9h and 4min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days
Dean, LA
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
13 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
14.1 days - Average sunshine days in May:
14.1 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
14.8 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
16.2 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is February (13 days).
Average UV index
Dean, LA
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover
Dean, LA
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Dean, LA
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Dean, Louisiana, USA
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