Climate and monthly weather forecastZachary, LA
Climate and monthly weather forecast
The climate of Zachary
Zachary, located in Louisiana, USA, experiences a Cfa climate according to the Köppen climate classification. This denotes a humid subtropical climate with no distinct dry season. As a general rule, Zachary enjoys warm weather throughout the year, with high humidity levels accompanying most days.Temperature highs peak up to 91.9°F (33.3°C) in July and August while the lower limits tend to fall to around 41.9°F (5.5°C) in January. A glance at the data also reveals that humidity ranges between 72% and 82%. A high level of humidity remains constant throughout the year, aligning with the typical subtropical pattern.
Zachary is not exempt from receiving a regular share of rainfall, averaging from 1.5" (38mm) to 3.66" (93mm), with July and August receiving the maximum. There is a relatively regular distribution of rainfall days as well, fluctuating from 8.5 to 22.3 days throughout the year. Moreover, cloud coverage mirrors the rainfall pattern, reaching its maximum coverage of 49% during the humid winter months.
Though not a regular occurrence, wintertime witnesses slight snowfall in Zachary. On rare occasions, snow may be seen in December and January, with maximum snowfall of 0.2 inch in either month. These months also record the highest winds, with wind speed ranging from 6.3mph (10.1km/h) to 6.8mph (10.9km/h).
The best time to visit Zachary
The best time to visit Zachary remains subjective, significantly depending on a visitor's weather preferences. However, for those enjoying milder conditions, spring serves as an excellent option. Temperature highs during this season range, on average, from 58.3°F (14.6°C) up to 78.3°F (25.7°C), promising comfortable weather with moderate rainfall, comparative to other months.Those seeking to maximize their exposure to the sun should consider visiting between May and August. These months boast of the most prolonged daylight durations, exceeding 13 hours, and the highest average UV indices of 7.
The worst time to visit Zachary
July and August prove to be challenging months to visit Zachary. These months are the warmest with high temperatures reaching around 91°F (32.8°C) and humidity levels frequently hitting 78%. In addition to these elements, these months also receive the most rainfall with averages of 3.58" (91mm) and 3.66" (93mm) respectively.Considering the notable snowfall faced by the city, December and January may also be inconvenient months for travelers. Variable winds and the occasional snowfall add to the challenges of the season.
Spring weather in Zachary
Thermometers start to rise in Spring, witnessing an average high temperature of 71.1°F (21.7°C) in March, up to 84.7°F (29.3°C) by May. This season also sees a gradual increase in rainfall, starting with an average of 1.93" (49mm) in March and ending with 2.44" (62mm) in May. Despite the rainfall, Spring remains enjoyable as temperatures remain moderate and sunshine duration extends to about 9.1 hours by April.Summer weather in Zachary
Summer in Zachary brings the hottest temperatures of the year, with July and August seeing an average high near 91°F (32.8°C). In fact, these months face the most prolonged daylight, exceeding 13 hours, while June faces the highest relative humidity level of 77%. Despite the peak temperatures, summer boasts the longest sunshine duration, averaging around 10 hours per day.Autumn weather in Zachary
Autumn generally offers a reprieve from the intense summer heat. Average high temperatures start to taper, moving from 87.8°F (31°C) in September to a more comfortable 68°F (20°C) by November. Rainfall also goes through a declining trend, with amounts shrinking from 2.28" (58mm) in September to an annual low of 1.5" (38mm) by November.Winter weather in Zachary
Winters are admittedly humid in Zachary with relative humidity peaking at 82% in December. The highest temperature during the day reaches the 60s°F, but the mercury drops to an average low of 45.9°F (7.7°C) in December. It is also during this season where a rare snowfall can occur with the highest average being 0.2 inch in December. Despite the conditions, daylight hours are considerably shorter, averaging around 10.2 hours in December.Weather in January
Opening the year in Zachary, Louisiana, January brings rather mild temperatures, setting the stage for what is to come in the later months. This month is characterized by the presence of substantial cloud cover, which impacts the availability of direct sunlight. Weather in January »Weather in February
February marks a slight change in the weather patterns witnessed in Zachary, Louisiana. Temperatures gradually begin to rise in anticipation of the forthcoming spring, bringing a subtle warmth to the air. Relative humidity also increases, slightly enhancing the perception of warmth. Weather in February »Weather in March
March in Zachary, Louisiana heralds the arrival of spring, bringing with it a significant increase in temperatures and a continuation of the rising humidity trend. As the transitional period between winter and spring, March hosts dynamic weather conditions. Weather in March »Weather in April
April signals the definitive arrival of spring in Zachary, Louisiana. The consistent rise in temperature during this month transforms the landscape, initiating the growth and blooming of various flora. Temperature variations between day and night become more prominent, providing a diverse weather experience. Weather in April »Weather in May
May is the harbinger of summer in Zachary, Louisiana, and presents the highest increase in temperatures since the beginning of the year. There are clear, sunny skies for most of the day and it is a good time for outdoor activities. Weather in May »Weather in June
With June arrives the much-awaited summer in Zachary, Louisiana. The season is distinguished by long, sunny days, supplemented by warm temperatures and a noticeable increase in humidity levels. A remarkable feature of this month is the significant jump in the number of rainfall days. Weather in June »Weather in July
Zachary, Louisiana enters its hottest month in July. The summer sun shines predominately, casting long daylight hours. Coupled with the increase in humidity, the heat could be perceived as exceptionally intense. The high temperatures and humid conditions continue well into August. Weather in July »Weather in August
Remaining in the grip of summer, August continues the trend of high temperatures in Zachary, Louisiana. Cloud coverage starts to recede compared to the previous month, slightly reducing the humidity levels. Concurrently, rainfall occurs more frequently cooling the environment. Weather in August »Weather in September
September marks the onset of autumn in Zachary, Louisiana. The weather begins to cool down, with a notable decrease in the daily high temperatures. As the humidity levels begin to stabilize, the transition from summer to autumn becomes evident. Weather in September »Weather in October
October, in Zachary, Louisiana, experiences a dramatic turn in weather conditions. Temperatures and humidity begin to take a considerable drop, offering crisp, cooler days. The advent of autumn is more noticeable as the days start to shorten. Weather in October »Weather in November
November welcomes a more refreshed climate in Zachary, Louisiana. The drop in temperature becomes more pronounced, and there's a perceptible crispness in the air. The daylight hours continue to lessen, giving way to longer nights. Weather in November »Weather in December
Wrapping up the year in Zachary, Louisiana, December introduces the onset of winter. The temperature continues its downward trend from November, reaching the lowest levels of the year. Humidity levels also decrease significantly, resulting in a much drier climate. Weather in December »Updated: Aug 26, 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 brings the lowest temperatures, with an average high of 58.3°F (14.6°C) and an average low of 41.9°F (5.5°C).
Throughout the year, there are 175 rainfall days, and 28.74" (730mm) of precipitation is accumulated.
Months with snowfall are January and December.
The months with the most snowfall are January and December, with an average 0.2" (5mm) of accumulated snow.
In Zachary, during the entire year, snow falls for 0.5 days and aggregates up to 0.39" (10mm) of snow.
January and December, with an average maximum UV index of 3, are months with the lowest UV index.
The months with the highest humidity are February and December, with an average relative humidity of 82%.
In Zachary, snow does not fall in February through November.
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 July, with an average maximum UV index of 7.
The month with the longest days in Zachary is June, with an average of 14h and 6min of daylight.
With an average of 10.2h of sunshine, June has the most sunshine of the year.
July is the month that records the highest temperatures, with averages ranging from a high of 91.9°F (33.3°C) to a low of 73.2°F (22.9°C).
August is the month with the most rainfall. Rain falls for 22.3 days and accumulates 3.66" (93mm) of precipitation.
With an average relative humidity of 72%, October is the least humid month.
November is the month with the least rainfall. Rain falls for 8.5 days and accumulates 1.5" (38mm) of precipitation.
With an average of 10h and 12min of daylight, December has the shortest days of the year.
With an average of 5h of sunshine, December has the least sunshine of the year.
Average temperature
Zachary, LA
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (58.3°F).
The month with the highest average low temperature is August (73.4°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).
Average pressure
Zachary, LA
- Average pressure in January:
30.17"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:
29.98"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).
Average wind speed
Zachary, LA
- Average wind speed in January:
6.4mph - Average wind speed in February:
6.6mph - Average wind speed in March:
6.2mph - Average wind speed in April:
6.5mph - Average wind speed in May:
5.3mph - Average wind speed in June:
4.6mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
4.4mph - Average wind speed in September:
4.5mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5.8mph - Average wind speed in December:
6.3mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.3mph).
Average humidity
Zachary, LA
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Zachary, LA
- Average rainfall in January:
2.4" - Average rainfall in February:
1.93" - Average rainfall in March:
1.93" - Average rainfall in April:
2.24" - Average rainfall in May:
2.44" - Average rainfall in June:
2.52"
- Average rainfall in July:
3.58" - Average rainfall in August:
3.66" - Average rainfall in September:
2.28" - Average rainfall in October:
1.69" - Average rainfall in November:
1.5" - Average rainfall in December:
2.56"
The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days
Zachary, LA
- Average rainfall days in January:
10.6 days - Average rainfall days in February:
12.8 days - Average rainfall days in March:
13.4 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
14 days - Average rainfall days in June:
18.9 days
- Average rainfall days in July:
21.5 days - Average rainfall days in August:
22.3 days - Average rainfall days in September:
17.7 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
13.4 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8.5 days).
Average snowfall
Zachary, LA
The months with the highest snowfall are January and December (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Zachary, LA
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.1 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 March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Zachary, LA
- Average daylight in January:
10h and 24min - 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 6min - Average sunshine in March:
7h and 24min - Average sunshine in April:
9h and 6min - Average sunshine in May:
9h and 48min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 42min - 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 12min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days
Zachary, LA
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
16.4 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
8.8 days
- Average sunshine days in July:
6.8 days - Average sunshine days in August:
7.1 days - Average sunshine days in September:
9.9 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (6.8 days).
Average UV index
Zachary, LA
The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover
Zachary, LA
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility
Zachary, LA
The months with the highest visibility are October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (5mi).
