Climate and monthly weather forecast
Hammond, LA

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The climate of Hammond

Hammond, Louisiana, USA rests within a climate zone identified by the Köppen Climate Classification as Cfa - a humid subtropical climate with no dry season. On an annual basis, the fluctuations of climatological parameters weave a narrative of diverse weather conditions.

The ambient air temperature in Hammond extends from 42.8°F (6°C) to 91.9°F (33.3°C) throughout the year, painting a picture of climate alterations between frosty winter early mornings and blistering summer afternoons. Meanwhile, the humidity hovers moderately from 73% in the more draught-like October to 81% in the oppressively humid February and December.

Rain showers are a common sight in Hammond. Precipitation takes the stage year-round with rainfall ranging from 1.14" (29mm) in November to an elevated peak of 3.9" (99mm) in July. Instances of snow are exceptionally rare, with only minuscule snowfall occurring in January and December.

Frequent sunny days, with a monthly average of sunlight duration stretching from 4.8 hours to 10.4 hours, offer ample opportunities to bask in the sun, especially between May and August. Combined with high visibility of more than 5 miles throughout the year, Hammond’s climate is perfectly suited for outdoor activities.

The breeze in Hammond rarely reaches gusty extremes, with the fastest winds clocking in from 10.5 MPH to 11 MPH. However, maximum wind speeds remain within 5.1 MPH to 7.3 MPH, hinting at a predictably calm wind scenario overall.

The best time to visit Hammond

For weather enthusiasts and sightseers, the best time to visit Hammond coincides with the months of April and May. During these months, there’s a graceful dance between modest humidity levels, favorable temperatures ranging from 58.6°F (14.8°C) to 85.1°F (29.5°C), and lower rainfall levels of 2.05" (52mm) to 2.32" (59mm), which creates an appealing climate for outdoor enthusiasts. Moreover, sunshine hours peak to 9.1 hours during this period, painting the days brighter.

The worst time to visit Hammond

While Hammond maintains a generally accommodating climate, the less favorable period encompasses the months of July to September. This timeframe is characterized by escalating temperatures soaring between 88°F (31.1°C) to 91.9°F (33.3°C). Notably, the highest rainfall of 3.9" (99mm) to 3.78" (96mm) makes an appearance during these months. Thus, visitors should anticipate frequent showers and oppressively muggy conditions.

Spring weather in Hammond

Spring signals a transition from colder to warmer months in Hammond, from March to May. The average high temperatures ascend from 71.2°F (21.8°C) to 85.1°F (29.5°C), accompanied by minor changes in nightly lows. Rainfall remains constant, hovering from 1.69" (43mm) to 2.32" (59mm), providing the perfect backdrop for luscious greenery to flourish.

Summer weather in Hammond

Summer, from June to August, ushers in the highest temperatures in Hammond. Daytime highs peak at an impressive 91.9°F (33.3°C) in July and lowers slightly to 88°F (31.1°C) in August. Simultaneously, the humidity remains relatively high, making summer days feel noticeably hotter. Rainfall reaches its zenith, with July boasting hefty downpours of 3.9" (99mm).

Autumn weather in Hammond

Autumn, between September and November, brings with it noticeably cooler temperatures and lesser rainfall than the summer months. Gradually falling temperatures, spanning from 88°F (31.1°C) to 68.4°F (20.2°C), intertwine with declining rainfall from 1.97" (50mm) to 1.14" (29mm), steering the climate towards a colder, drier season.

Winter weather in Hammond

Winter spans from December to February, encapsulating the region in a chilly embrace. During this period, Hammond experiences its coolest temperatures of the year, sinking to a chilly 42.8°F (6°C). Precipitation is steady with rainfall levels from 2.64" (67mm) in December to 1.85" (47mm) in February, while snow makes an infrequent appearance accounting for almost no accumulation.

Weather in January

Unlike the bitterly cold condition experienced in many parts of the United States, Hammond in January presents a rather mild winter environment. The weather typically features cool air, foggy mornings, light rain, and low cloud cover. Weather in January »

Weather in February

As the calendar flips from January in Hammond, there's a slight rise in temperatures. February in Hammond presents a mix of cool breezes, humid days, and more occurrences of rainfall compared to January. The increase in cloud cover fosters relative humidity that averages around 81%. Weather in February »

Weather in March

March transitions Hammond from the chilly winter to the warmth of spring. The arrival of spring is marked by days filled with sunshine, transitioning cloud cover, and increased daylight hours. The higher temperatures, ranging from 53.2°F (11.8°C) to 71.2°F (21.8°C), supports the growth and blossoming of vegetation. Weather in March »

Weather in April

April ushers in the warmth, casting away the last vestiges of winter in Hammond. Frequent showers, mild temperatures, and longer daylight hours become the norm. With high temperatures reaching up to 78.4°F (25.8°C), a significant rise from March is witnessed. Weather in April »

Weather in May

Consecutive warm months lead to May being one of the warmest months in Hammond with high temperatures reaching up to an impressive 85.1°F (29.5°C). The rise in heat signifies the approaching summer, leading to an increase in outdoor activities. Weather in May »

Weather in June

June introduces the summer season to Hammond with warmer temperatures and longer days. High temperatures rise to a scorching 90.9°F (32.7°C), making it paramount to stay hydrated and avoid overexposure to the sun. Activities shift to the early morning and late evenings to escape the sweltering midday heat. Weather in June »

Weather in July

July stands out as the hottest month in Hammond with high temperatures reaching a peak of 91.9°F (33.3°C). Beach and pool activities often take precedence due to the high heat and lengthy sunshine durations. Yet, despite the intense heat, the city witnesses the highest amount of rainfall registered in a month with 20.6 days of precipitation. Weather in July »

Weather in August

Summer continues in full swing in August, with temperatures reaching 91.4°F (33°C). Purple martins and other migratory birds begin to gather for their autumn journey south. Despite the relentless summer heat, August witnesses a slightly lower amount of rainfall in comparison to July. Weather in August »

Weather in September

As September arrives in Hammond, there's a notable decrease in high temperatures, hovering around 88°F (31.1°C). The decline in temperature starts to signal the imminent arrival of autumn. The frequency of rainfall decreases dramatically when compared to the wet months of July and August. Weather in September »

Weather in October

The fall season is in full effect by October in Hammond, marking a significant transformation from the summer weather. Temperatures take on a more comfortable range, with cool mornings and moderate midday weather. Compared to September, October experiences slightly lesser rainfall spread across fewer days. Weather in October »

Weather in November

November witnesses a further drop in temperatures, featuring crisp mornings and chilly, long nights. Despite the declining temperatures, the city of Hammond usually stays free from snow during this month, just like its fellow winter months. Weather in November »

Weather in December

The year concludes with December, known to bring colder days and frosty nights to Hammond. The drop in temperatures to lows of 46.9°F (8.3°C) and highs of 62.1°F (16.7°C) signifies the full arrival of winter. Despite the cold, snowfall remains a rarity in December, marking a characteristic trend throughout the year. Weather in December »
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Frequently asked questions

What time of the year is the coldest in Hammond?

January, having an average high-temperature of 58.6°F (14.8°C) and an average low-temperature of 42.8°F (6°C), is the coldest month in Hammond.

How many days does it rain in Hammond?

Throughout the year, there are 163.3 rainfall days, and 27.64" (702mm) of precipitation is accumulated.

When does it snow in Hammond?

January and December are months with snowfall in Hammond, Louisiana.

When does it snow the most in Hammond?

January is the month with the most snowfall. Snow falls for 0.2 days and accumulates 0.2" (5mm) of snow.

How many days does it snow in Hammond?

In Hammond, during the entire year, snow falls for 0.4 days and aggregates up to 0.24" (6mm) of snow.

What are the months with the lowest UV index in Hammond?

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

What are the most humid months in Hammond?

February and December, with an average relative humidity of 81%, are most humid months in Hammond, Louisiana.

When it does not snow in Hammond?

February through November are months without snowfall in Hammond.

What is the month with the least sunshine in Hammond?

The months with the least sunshine are February and December, with an average of 4.8h of sunshine.

When is Daylight Saving Time (DST) in Hammond?

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 month with the highest UV index in Hammond?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Hammond, Louisiana.

When are the longest days in Hammond?

The month with the longest days is June, with an average of 14h and 6min of daylight.

What is the month with the most sunshine in Hammond?

The months with the most sunshine are June and August, with an average of 10.4h of sunshine.

What month is the hottest in Hammond?

July, on average, is the warmest month, registering a high temperature of 91.9°F (33.3°C) and a low of 74.1°F (23.4°C).

What is the wettest month in Hammond?

July is the month with the most rainfall in Hammond, Louisiana. Rain falls for 20.6 days and accumulates 3.9" (99mm) of precipitation.

What is the least humid month in Hammond?

October is the least humid month, with an average relative humidity of 73%.

What is the driest month in Hammond?

The month with the least rainfall in Hammond, Louisiana, is November, when the rain falls for 7.6 days and typically collects 1.14" (29mm) of precipitation.

What is the month with the shortest days in Hammond?

The month with the shortest days in Hammond is December, with an average of 10h and 12min of daylight.

Average temperature
Hammond, LA

Average temperature - Hammond, 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 (58.6°F).

The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).

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Average pressure
Hammond, LA

Average pressure - Hammond, LA

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).

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Average wind speed
Hammond, LA

Average wind speed - Hammond, LA

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

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Average humidity
Hammond, LA

Average humidity - Hammond, LA

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).

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Average rainfall
Hammond, LA

Average rainfall - Hammond, LA

The wettest month (with the highest rainfall) is July (3.9").
The driest month (with the least rainfall) is November (1.14").

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Average rainfall days
Hammond, LA

Average rainfall days - Hammond, LA

The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is November (7.6 days).

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Average snowfall
Hammond, LA

Average snowfall - Hammond, LA

The month with the highest snowfall is January (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days
Hammond, LA

Average snowfall days - Hammond, LA

The months with the highest number of snowfall days are January and December (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Hammond, LA

Average daylight / Average sunshine - Hammond, LA

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).

The months with the most sunshine are June and August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days
Hammond, LA

Average sunshine days - Hammond, LA

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (7.9 days).

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Average UV index
Hammond, LA

Average UV index - Hammond, 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).

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Average visibility
Hammond, LA

Average visibility - Hammond, LA

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

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Hammond, Louisiana, USA

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