Climate and monthly weather forecastLafayette, LA
Climate and monthly weather forecast
The climate of Lafayette
Situated in the Southern region of the United States, Lafayette, Louisiana, is characterized by a Humid subtropical climate type, denoted as Cfa in the Köppen climatic classification. This classification signifies a climate with no dry season, high humidity, and significant rainfall throughout the year.By analyzing the provided climatological data, it becomes apparent that Lafayette experiences a significant variation in temperatures throughout the year, ranging from an average high of 90°F (32.2°C) in August to an average low of 44.2°F (6.8°C) in January. Humidity remains relatively steady across the year, fluctuating slightly from 76% in May to 81% in February. Annual rainfall ranges from a high of 2.8" (71mm) in August to a low of 0.83" (21mm) in March, demonstrating the existence of a substantial wet season during the late summer months.
Lafayette's unique weather patterns include the peak of rainfall in late summer and a steadily increasing UV index from January to May, with the highest recorded index value of 7 seen from May to August. The city also experiences an average maximum wind speed of 8.8mph (14.2km/h) in February and April, decreasing to a minimum of 5.3mph (8.5km/h) in July and August. These conditions contribute to Lafayette's climate, which is marked by mild winters and hot, humid summers.
The best time to visit Lafayette
The ideal time to visit Lafayette would arguably be in the spri- ng, between March and May. During this period, average high temperatures fluctuate between 70.9°F (21.6°C) and 84.6°F (29.2°C), providing comfortable weather conditions for outdoor activities. Additionally, relative humidity values tend to be lower during this time, falling between 76% and 80%.The worst time to visit Lafayette
Due to Lafayette's subtropical climate, the month of August proves to be the least hospitable for visitors. The worst of the summer heat is felt during this period, as demonstrated by the highest recorded average temperature of 90°F (32.2°C). Furthermore, this period also coincides with the highest average monthly rainfall of 2.8" (71mm), leading to increased likelihood of rain-related disruptions.Spring weather in Lafayette
As the calendar turns to spring, Lafayette undergoes a notable transition in its weather. From March through to May, high temperatures rise from 70.9°F (21.6°C) to 84.6°F (29.2°C). Correspondingly, the night-time low temperatures also increase from 54.3°F (12.4°C) to 67.5°F (19.7°C). Rainfall remains relatively consistent throughout the spring months, ranging from 0.83" (21mm) to 1.46" (37mm).Summer weather in Lafayette
The summer months from June to August represent the apex of Lafayette's subtropical climate. The city experiences its annual maximum average temperatures peaking from 89.2°F (31.8°C) to 90°F (32.2°C), while the night temperatures remain warm, fluctuating from 73°F (22.8°C) to 74.8°F (23.8°C).Autumn weather in Lafayette
During the autumn months from September to November, average high temperatures in Lafayette slowly drop from 86.7°F (30.4°C) to 68.4°F (20.2°C). Meanwhile, average low temperatures also decrease, moving from 70.5°F (21.4°C) in September down to 52°F (11.1°C) by November, signaling the approaching cold season.Winter weather in Lafayette
Winter in Lafayette is relatively mild. While December sees average high temperatures of 61.9°F (16.6°C), January experiences the coldest average low temperature of 44.2°F (6.8°C). Very nominal amounts of snowfall are expected during this period, with the highest recorded snowfall being 0.1 days in January.Weather in January
The onset of a new year in Lafayette, Louisiana is accompanied by a mild winter. Compared to a typical Christmas, January offers chilled evenings with temperatures lying between 44.2°F (6.8°C) and 58.8°F (14.9°C). The city usually experiences some rain, ample sunshine during the day, and consistent cloud coverage. Weather in January »Weather in February
As the calendar flips to February, Lafayette witnesses an ascending trend in temperatures. Providing warmer experiences during the day compared to January, rain can still be expected during this month. The increase in temperature influences the atmospheric humidity and pressure as well. Weather in February »Weather in March
March brings along warmer temperatures, hinting at an early introduction to spring. This month presents less rainfall compared to previous months with a slight shift from 0.91" (23mm) in February to 0.83" (21mm). Daylight stretches out as nature springs back to life, making this period ideal for outdoor activities. Weather in March »Weather in April
April offers beautiful spring weather. It is a transformative period with temperatures lying between 60.1°F (15.6°C) and 77.5°F (25.3°C), the highest thus far in the year. The increased heat levels lead to a moderate drop in humidity, still, the city continues to enjoy plentiful sunshine. Weather in April »Weather in May
May brings a distinct change, with the city being exposed to increased sunlight for up to 13.7 hours per day. It becomes considerably warmer from April to May. However, the cool winds provide a relief from the impending hot summer. In spite of the heat, precipitation and humidity levels stay consistent, maintaining the environment's moisture. Weather in May »Weather in June
During June, Lafayette transitions into summer with temperatures oscillating between 73°F (22.8°C) and 89.2°F (31.8°C). Daylight extends to its maximum duration post which it starts to dwindle. The city experiences its highest rainfall of the year in this month. Weather in June »Weather in July
July is the season of high heat in Lafayette with the temperatures soaring to a peak of 89.8°F (32.1°C). Despite the heat, there is a significant decrease in wind speed from 5.9mph (9.5km/h) to 5.3mph (8.5km/h), compared to June. Weather in July »Weather in August
August amplifies the summer conditions as it might turn out to be the hottest month, despite temperatures being between 74.8°F (23.8°C) and 90°F (32.2°C), similar to July. Combining the peak heat with the highest levels of rainfall and humidity, it is the epitome of a typical Louisiana summer. Weather in August »Weather in September
Relief from the heat begins in September as Lafayette, Louisiana starts moving towards fall. Post the extreme heat in August, the temperatures drop providing residents with a glimpse of the forthcoming autumn season. As the city bids goodbye to the scorching summers, the frequency of rainfall reduces. Weather in September »Weather in October
October plays a significant role in shifting Lafayette's weather. It encompasses the lowest rainfall of the year, dropping from 1.38" (35mm) in September to 1.46" (37mm). The arrival of fall brings along cool evenings while days remain warm. Weather in October »Weather in November
November holds an essential place as it debuts the late fall season in Lafayette. The temperatures drop further compared to October, bringing along chilly evenings. The city starts preparing to welcome winter as the daylight hours lessen. Weather in November »Weather in December
December marks the arrival of winter and brings a year-end chill. Compared to the warmth of November, December is colder with temperatures fluctuating between 48°F (8.9°C) and 61.9°F (16.6°C). The shorter daylight hours are compensated by brilliant sunshine during the day. Weather in December »Updated: Aug 23, 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
Lafayette's coldest month, January, registers temperatures that range from a high of 58.8°F (14.9°C) to a low of 44.2°F (6.8°C).
In Lafayette, during the entire year, the rain falls for 143.3 days and collects up to 17.91" (455mm) of precipitation.
January is the only month when snow falls.
The month with the most snowfall days is January, when snow falls for 0.1 days.
In Lafayette, during the entire year, snow falls for 0.1 days.
With an average relative humidity of 81%, February is the most humid month.
In Lafayette, snow does not fall in February through December.
The month with the least rainfall is March, when the rain falls for 10.3 days and typically collects 0.83" (21mm) of precipitation.
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 August, with an average maximum UV index of 7.
With an average of 14h and 6min of daylight, June has the longest days of the year.
The month with the most sunshine is June, with an average of 10.6h of sunshine.
August, having an average high-temperature of 90°F (32.2°C) and an average low-temperature of 74.8°F (23.8°C), is the warmest month.
August is the month with the most rainfall. Rain falls for 20 days and accumulates 2.8" (71mm) of precipitation.
The least humid month is October, with an average relative humidity of 73%.
The month with the shortest days is December, with an average of 10h and 12min of daylight.
December has the least sunshine of the year, with an average of 5h of sunshine.
With an average maximum UV index of 3, December is the month with the lowest UV index.
Average temperature
Lafayette, LA
The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (58.8°F).
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure
Lafayette, LA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.01"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 month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Lafayette, LA
- Average wind speed in January:
7.9mph - Average wind speed in February:
8.2mph - Average wind speed in March:
7.8mph - Average wind speed in April:
8.1mph - Average wind speed in May:
7mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.4mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).
Average humidity
Lafayette, LA
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Lafayette, LA
- Average rainfall in January:
1.42" - Average rainfall in February:
0.91" - Average rainfall in March:
0.83" - Average rainfall in April:
1.46" - Average rainfall in May:
1.18" - Average rainfall in June:
1.93"
The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is March (0.83").
Average rainfall days
Lafayette, LA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.9 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
10.5 days - Average rainfall days in May:
10.3 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
17.9 days - Average rainfall days in August:
20 days - Average rainfall days in September:
14.9 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is August (20 days).
The months with the least rainy days are January and November (7.8 days).
Average snowfall days
Lafayette, 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
Lafayette, LA
- Average daylight in January:
10h and 30min - Average daylight in February:
11h and 6min - 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 6min
- Average daylight in July:
13h and 54min - 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 36min - Average daylight in December:
10h and 12min
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 24min - Average sunshine in February:
5h and 24min - Average sunshine in March:
7h and 18min - Average sunshine in April:
9h and 18min - Average sunshine in May:
10h and 12min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 6min - Average sunshine in September:
9h and 54min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days
Lafayette, LA
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
17.8 days - Average sunshine days in April:
17.8 days - Average sunshine days in May:
18.3 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
9.6 days - Average sunshine days in August:
8 days - Average sunshine days in September:
12.1 days - Average sunshine days in October:
20.4 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (8 days).
Average UV index
Lafayette, 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
Lafayette, LA
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility
Lafayette, 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).
