Climate and monthly weather forecastHarvey, LA
Climate and monthly weather forecast
Weather in January
January, like December, is another refreshing winter month in Harvey, Louisiana, with an average temperature varying between 48.6°F (9.2°C) and 60.4°F (15.8°C). January is the coldest month of the year, registering average temperatures as high as 60.4°F (15.8°C) and as low as 48.6°F (9.2°C). Weather in January »Weather in February
The last month of the winter, February, is a comfortable month in Harvey, Louisiana, with an average temperature fluctuating between 64.6°F (18.1°C) and 52.7°F (11.5°C). A minor adjustment in Harvey's average high-temperature is noted with the start of February, touching a still refreshing 64.6°F (18.1°C) from January's 60.4°F (15.8°C). Weather in February »Weather in March
The first month of the spring, March, is an agreeable month in Harvey, Louisiana, with an average temperature fluctuating between 58.3°F (14.6°C) and 70.7°F (21.5°C). In Harvey, stepping into March brings a gentle temperature nudge, moving slightly up from February's comfortable 64.6°F (18.1°C) to a pleasant 70.7°F (21.5°C). Weather in March »Weather in April
April in Harvey, Louisiana, is a warm spring month, with temperature in the range of an average low of 64.2°F (17.9°C) and an average high of 77°F (25°C). April brings a slight rise in Harvey's average high-temperature, moving from a pleasant 70.7°F (21.5°C) in March to a moderately hot 77°F (25°C). Weather in April »Weather in May
May, the last month of the spring in Harvey, is another warm month, with an average temperature varying between 71.2°F (21.8°C) and 82.9°F (28.3°C). May brings a slight increase in the average high-temperature, progressing from 77°F (25°C) in April to a still warm 82.9°F (28.3°C). Weather in May »Weather in June
June, the first month of the summer in Harvey, is a tropical month, with an average temperature ranging between max 88.3°F (31.3°C) and min 77.7°F (25.4°C). A subtle rise in the average high-temperature is observed during June, adjusting from a warm 82.9°F (28.3°C) in May to a tropical 88.3°F (31.3°C). Weather in June »Weather in July
July, like June, is a hot summer month in Harvey, Louisiana, with an average temperature varying between 79.3°F (26.3°C) and 89.4°F (31.9°C). The height of temperatures is seen during July and August, averaging a high-temperature of 89.4°F (31.9°C). In July, the heat index is appraised at a scorching 105.8°F (41°C). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Harvey, Louisiana, with temperature in the range of an average high of 89.4°F (31.9°C) and an average low of 79.5°F (26.4°C). During July and August, Harvey experiences its highest average temperatures, peaking at 89.4°F (31.9°C). In August, the average heat index is appraised at a blistering 105.8°F (41°C). Weather in August »Weather in September
September, the first month of the autumn in Harvey, is still a hot month, with an average temperature varying between 76.3°F (24.6°C) and 86.5°F (30.3°C). Harvey's shift into September is marked by a subtle change to a still hot 86.5°F (30.3°C) from August's 89.4°F (31.9°C) in temperature. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Harvey, Louisiana, with an average temperature ranging between max 78.8°F (26°C) and min 66.9°F (19.4°C). The arrival of October is marked by a minor reduction in average high-temperature, sliding from a tropical 86.5°F (30.3°C) in September to a moderately hot 78.8°F (26°C). Weather in October »Weather in November
November, the last month of the autumn in Harvey, is another pleasant month, with an average temperature ranging between max 68.9°F (20.5°C) and min 57.4°F (14.1°C). November brings a decrease in the average high-temperature, falling from October's warm 78.8°F (26°C) to a pleasant 68.9°F (20.5°C). Weather in November »Weather in December
The first month of the winter, December, is still a comfortable month in Harvey, Louisiana, with an average temperature fluctuating between 52.5°F (11.4°C) and 63.5°F (17.5°C). December is characterized by a mild reduction in the average high-temperature, from a pleasant 68.9°F (20.5°C) in November to an enjoyable 63.5°F (17.5°C). Weather in December »Updated: Jun 6, 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
January is the coldest month of the year, registering average temperatures as high as 60.4°F (15.8°C) and as low as 48.6°F (9.2°C).
Throughout the year, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.
January is the only month when snow falls.
January has the most snowfall days of the year. Snow falls for 0.1 days.
In Harvey, during the entire year, snow falls for 0.1 days.
February and December, with an average relative humidity of 77%, are most humid months.
In Harvey, snow does not fall in February through December.
March and April are months with the least rain when the rain falls for 8.3 days and typically aggregates up to 0.43" (11mm) of rain.
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.
The months with the highest UV index are May through September, with an average maximum UV index of 7.
The month with the longest days is June, with an average of 14h and 0min of daylight.
June has the most sunshine of the year, with an average of 11h of sunshine.
July and August are known as Harvey's warmest months, with an average high-temperature of 89.4°F (31.9°C).
The month with the most rainfall is July, when the rain falls for 15.5 days and typically aggregates up to 1.57" (40mm) of precipitation.
The least humid month in Harvey is October, with an average relative humidity of 71%.
The month with the shortest days is December, with an average of 10h and 18min of daylight.
The month with the least sunshine is December, with an average of 5.1h of sunshine.
With an average maximum UV index of 3, December is the month with the lowest UV index.
Average temperature
Harvey, LA
The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure
Harvey, LA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
29.97"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, August and September (29.97"Hg).
Average wind speed
Harvey, LA
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.7mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.4mph - Average wind speed in November:
9mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity
Harvey, LA
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Harvey, LA
- Average rainfall in January:
0.47" - Average rainfall in February:
0.55" - Average rainfall in March:
0.43" - Average rainfall in April:
0.43" - Average rainfall in May:
0.75" - Average rainfall in June:
0.87"
- Average rainfall in July:
1.57" - Average rainfall in August:
1.46" - Average rainfall in September:
0.47" - Average rainfall in October:
0.94" - Average rainfall in November:
0.63" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").
Average rainfall days
Harvey, LA
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
8.3 days - Average rainfall days in April:
6.7 days - Average rainfall days in May:
8.6 days - Average rainfall days in June:
11.9 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
17.2 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
6.8 days - Average rainfall days in November:
4.7 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).
Average snowfall days
Harvey, LA
- Average snowfall days in January:
0.1 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 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Harvey, LA
- Average daylight in January:
10h and 30min - Average daylight in February:
11h and 12min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 54min - Average daylight in May:
13h and 42min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 48min - Average daylight in August:
13h and 12min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 42min - Average daylight in December:
10h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January:
5h and 42min - Average sunshine in February:
5h and 24min - Average sunshine in March:
7h and 54min - Average sunshine in April:
9h and 54min - Average sunshine in May:
10h and 36min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 36min - Average sunshine in September:
10h and 6min - Average sunshine in October:
7h and 18min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 6min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days
Harvey, LA
- Average sunshine days in January:
23.1 days - Average sunshine days in February:
18.9 days - Average sunshine days in March:
21.4 days - Average sunshine days in April:
21.8 days - Average sunshine days in May:
19.3 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
10.1 days - Average sunshine days in August:
8.9 days - Average sunshine days in September:
12.5 days - Average sunshine days in October:
22.3 days - Average sunshine days in November:
23.5 days - Average sunshine days in December:
21.6 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).
Average UV index
Harvey, LA
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Harvey, LA
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility
Harvey, LA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
