Climate and monthly weather forecast
Hattiesburg, MS

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The climate of Hattiesburg

In the southeastern United States, specifically Hattiesburg, Mississippi, citizens encounter a humid subtropical climate, denoted as Cfa according to Köppen climate classification. Positioned geographically at the center of the south, the weather fluctuates becoming warmer in summer and maintaining modest chill during the winter months.

Elaborating on the climate, the year's temperature varies between a low average of 39.7°F (4.3°C) (in January) to a high average of 91.8°F (33.2°C) (in August). Rainfall is both standard and common, with roughly 11.6 days of rain in January and peaking at an ample 22.3 days in August. As the year spans, daily daylight hours extend from 10.1 hours in December to 14.2 hours in June. A modest UV index ranges from 3 to 7, depending on the month.

Overall, Hattiesburg weather is characterized by high humidity, ranging from 74% in May to 81% in December, and relatively stable air pressure ranging from 29.97in in June and September to 30.17in in January. While the climate can generally be described as wet and warm, with cloud coverage of 29% in October up to 49% in February and December, some months see significant weather extremes. Highest rainfall touches at 4.37in in July, while snowfall, though rare, can be seen in January, February, and December.

The best time to visit Hattiesburg

The pleasant months, from April till June, serve as the best time to visit Hattiesburg. During these months, the average high temperature lies from the comfortable mid-70s°F to the low 90s°F. In addition, the daylight hours span from 13 hours to 14.2 hours providing ample time for tourists to explore the city. Further, the UV index is modest, between 5 and 7, rendering it agreeable for outdoor activities.

The worst time to visit Hattiesburg

With the humid subtropical climate of Hattiesburg, comes a wet season. July and August, with peak rainfall reaching 4.37in and 3.98in respectively, can dampen travel plans and outdoor activities. High humidity levels in August, reaching 75%, can also make the weather feel oppressively warm, with average highs soaring up to 91.8°F (33.2°C). Furthermore, the number of rainy days reaches its peak, with 22.3 days in August.

Spring weather in Hattiesburg

The spring weather, from March till May, provides a moderate climate, ideal for travel. Average high temperatures, during these months, range from a comfortable 69.8°F (21°C) in March to a slightly warmer 84.7°F (29.3°C) in May. Rainfall during this period is also moderate, with an average between 2.6in in April to 3.07in in March.

Summer weather in Hattiesburg

The summer season, covering months from June until August, stands at the peak with the maximum temperature average of 91°F (32.8°C) in June, going up to 91.8°F (33.2°C) in August. The rainfall also increases from 3.15in in June reaching up to 4.37in in July. However, the humidity during this period remains close to 74% in June and goes up to 76% in August, indicating a warm and humid climate.

Autumn weather in Hattiesburg

Autumn in Hattiesburg, from September until November, is marked by a decline in temperatures. The average high temperatures decrease from 87.8°F (31°C) in September to 66.7°F (19.3°C) in November. Rainfall remains relatively stable around 2.91in in September to 1.77in in November. With drier weather and decreasing temperatures, the season becomes pleasant.

Winter weather in Hattiesburg

Winter months from December to February are characterized by mild and short cold periods with average high temperatures ranging from 56.8°F (13.8°C) in January to 62.2°F (16.8°C) in February. Though low, the average snowfall of 0.24in in January indicates the colder climate during this period. The number of daylight hours shrinks to 10.4 hours in January, indicating shorter days, and the UV index declines to 3 by December, illustrating the subdued sunlight during wintery days.

Weather in January

Hattiesburg, Mississippi, witnesses cool temperatures at the start of the year. With the highest temperature reaching 56.8°F (13.8°C), it remains a month marked by relative coldness. Notable precipitation observed in Hattiesburg, rendering the weather condition slightly moist with a reported rainfall of 2.64" (67mm). Weather in January »

Weather in February

Moving into February, the weather exhibits changes hinting towards the arrival of spring. A welcomed increase in temperature adds warmth to the city's atmosphere. The highest temperature for the month rises to 62.2°F (16.8°C), symbolizing the fading winter. Weather in February »

Weather in March

March marks an exciting transition in Hattiesburg's climate. A significant increase in temperature becomes evident, with the mercury reaching up to 69.8°F (21°C). The city witnesses thriving life around its corners, indicating the much-awaited arrival of spring. Weather in March »

Weather in April

April brings ample warmth to Hattiesburg, indicating the arrival of the warm season. The weather seems to sway in favor of sun enthusiasts as the highest temperature is recorded at 77.7°F (25.4°C). Flowers are in full bloom and days appear longer, lighting up the city's atmosphere. Weather in April »

Weather in May

The month of May introduces summer to Hattiesburg, Mississippi. The arrival of warmer days is signaled by May's peak temperature that spikes up to 84.7°F (29.3°C). Locals and tourists indulge in a variety of outdoor activities, taking full advantage of the increased daylight hours. Weather in May »

Weather in June

Heat intensifies in June, marking the peak of the summer season in Hattiesburg. The thermometer hits a high of 91°F (32.8°C) signifying the arrival of hot summer days. The warmth of the season, combined with the city's vibrant community, has locals buzzing with activities. Weather in June »

Weather in July

July in Hattiesburg, Mississippi, is a time of searing heat. With the mercury soaring to a high of 91.8°F (33.2°C), the city experiences scorching temperatures and humid conditions. Despite these heatwave conditions, life in the city continues, albeit at a slower pace. Weather in July »

Weather in August

With little change in the hot weather, August presents similar weather patterns as July in Hattiesburg. With the highest temperature climbing to 91.6°F (33.1°C), August is as warm as any summer month. Residents and tourists alike eagerly anticipate the cooling changes of the upcoming fall. Weather in August »

Weather in September

The hot summer starts to wind down as September makes its entrance in Hattiesburg. With a significant dip in the hottest temperature, which falls to 87.8°F (31°C), it marks the onset of the fall. The city begins to wear a different look, with summer greens swapping places with fall hues. Weather in September »

Weather in October

October sees a continuous decline in the temperatures, hinting towards the approaching cool season in Hattiesburg. A substantial decrease in the highest temperature to 78.6°F (25.9°C) indicates the ongoing transition. Trees take on hues of autumn and forests put on a display worth beholding. Weather in October »

Weather in November

As the city of Hattiesburg gears towards the end of the year, November sets in with a noticeable chill in the air. The highest temperature drops to 66.7°F (19.3°C), indicating the arrival of winter. Despite the cold, the city remains bustling with activity, owing to the festive season around the corner. Weather in November »

Weather in December

Winter assumes full swing in Hattiesburg, Mississippi, as December advances. Witnessing the lowest temperature of the year, December’s highest temperature drops to 59.7°F (15.4°C). The famed holiday season fills the air with cheer, with twinkling lights brightening winter nights. Weather in December »
Updated: Jun 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

The coldest month is January, with an average high-temperature of 56.8°F (13.8°C) and an average low-temperature of 39.7°F (4.3°C).

How much does it rain in Hattiesburg?

In Hattiesburg, during the entire year, the rain falls for 177.1 days and collects up to 36.42" (925mm) of precipitation.

When does it snow?

January through March and December are months with snowfall.

How many days does it snow in Hattiesburg?

In Hattiesburg, during the entire year, snow falls for 1.5 days and aggregates up to 0.87" (22mm) of snow.

What is the month with the lowest UV index?

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

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.

When it does not snow in Hattiesburg?

In Hattiesburg, snow does not fall in April through November.

When are the longest days?

The month with the longest days is June, with an average of 14h and 12min of daylight.

What month has the most sunshine in Hattiesburg?

With an average of 10.6h of sunshine, June has the most sunshine of the year.

When is the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 7.

What is the rainiest month?

July is the month with the most rainfall. Rain falls for 21.8 days and accumulates 4.37" (111mm) of precipitation.

What are the warmest months?

August registers as the month with the average highest temperatures, reaching 91.8°F (33.2°C) at its peak and 73°F (22.8°C) at the lowest.

What is the least humid month?

The least humid month is October, with an average relative humidity of 71%.

What is the driest month?

November is the month with the least rainfall. Rain falls for 8.7 days and accumulates 1.77" (45mm) of precipitation.

What is the most humid month in Hattiesburg?

With an average relative humidity of 81%, December is the most humid month.

When does it snow the most?

December is the month with the most snowfall. Snow falls for 0.4 days and accumulates 0.39" (10mm) of snow.

What is the month with the shortest days?

With an average of 10h and 12min of daylight, December has the shortest days of the year in Hattiesburg.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 4.9h of sunshine.

Average temperature
Hattiesburg, MS

Average temperature - Hattiesburg, MS

The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is January (56.8°F).

The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).

Average pressure
Hattiesburg, MS

Average pressure - Hattiesburg, MS

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

Average wind speed
Hattiesburg, MS

Average wind speed - Hattiesburg, MS

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.4mph).

Average humidity
Hattiesburg, MS

Average humidity - Hattiesburg, MS

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall
Hattiesburg, MS

Average rainfall - Hattiesburg, MS

The wettest month (with the highest rainfall) is July (4.37").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days
Hattiesburg, MS

Average rainfall days - Hattiesburg, MS

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8.7 days).

Average snowfall
Hattiesburg, MS

Average snowfall - Hattiesburg, MS

The month with the highest snowfall is December (0.39").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days
Hattiesburg, MS

Average snowfall days - Hattiesburg, MS

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight / Average sunshine
Hattiesburg, MS

Average daylight / Average sunshine - Hattiesburg, MS

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 12min).

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days
Hattiesburg, MS

Average sunshine days - Hattiesburg, MS

The months with the most sunshine days are October and November (19.8 days).
The month with the least sunshine days is August (6.4 days).

Average UV index
Hattiesburg, MS

Average UV index - Hattiesburg, MS

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average visibility
Hattiesburg, MS

Average visibility - Hattiesburg, MS

The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).

Hattiesburg, Mississippi, USA

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