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Contents
- The climate of Sulphur
- The best time to visit Sulphur
- The worst time to visit Sulphur
- Spring weather in Sulphur
- Summer weather in Sulphur
- Autumn weather in Sulphur
- Winter weather in Sulphur
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Sulphur
The town of Sulphur, Oklahoma, nestles in a climate zone classified as Cfa (Humid subtropical, no dry season) according to the Köppen climate classification system. Situated in the southern part of America's Heartland, this area experiences a distinctive seasonal shift, which is evident in its monthly weather parameters.
Throughout the year, temperatures in Sulphur demonstrate a clear pattern, enduring both chilly winters and hot, humid summers. The temperature ranges from a low of 33.4°F (0.8°C) in January to a scorching high 93.4°F (34.1°C) in August. Similarly, relative humidity spans from 61% to 78%, contributing to the muggy atmosphere during the warmer months.
Rainfall rates vary significantly, peaking in May at a substantial 4.37" (111mm), while maintaining lower averages of around 1.42" (36mm) in February and then again in December. Even snowfall sways minusculely, albeit occurring mostly in winter months. January, for instance, witnesses an average of 0.31" (8mm) of snow, compared to virtually none during summer months. Wind speeds oscillate between 7.6mph (12.2km/h) in July and 11.1mph (17.9km/h) in both March and April. These varied weather phenomena make Sulphur's climate a dynamic amalgamation of contrasting conditions.
Throughout the year, temperatures in Sulphur demonstrate a clear pattern, enduring both chilly winters and hot, humid summers. The temperature ranges from a low of 33.4°F (0.8°C) in January to a scorching high 93.4°F (34.1°C) in August. Similarly, relative humidity spans from 61% to 78%, contributing to the muggy atmosphere during the warmer months.
Rainfall rates vary significantly, peaking in May at a substantial 4.37" (111mm), while maintaining lower averages of around 1.42" (36mm) in February and then again in December. Even snowfall sways minusculely, albeit occurring mostly in winter months. January, for instance, witnesses an average of 0.31" (8mm) of snow, compared to virtually none during summer months. Wind speeds oscillate between 7.6mph (12.2km/h) in July and 11.1mph (17.9km/h) in both March and April. These varied weather phenomena make Sulphur's climate a dynamic amalgamation of contrasting conditions.
The best time to visit Sulphur
Considering the climatic elements such as temperature, sunshine hours, and precipitation together, the ideal time to visit Sulphur would potentially be in May. Average temperatures hover around a comfortable 71.1°F (21.7°C), while the humidity remains tolerable at around 78%. This is also the month with the highest average rainfall, about 4.37" (111mm), making the surroundings lush and green. May further boasts 14 hours of daylight and approximately 8.5 hours of sunshine each day, providing ample daylight for exploration and outdoor activities.
The worst time to visit Sulphur
The sweltering temperatures in August, consistently hitting highs of 93.4°F (34.1°C), coupled with a significant relative humidity of 61%, make this month the least desirable for tourists. The high temperature and humidity may result in discomfort, especially for those unaccustom to such conditions. Furthermore, the heat lasts into the night with temperatures only dropping to an average low of 72.1°F (22.3°C).
Spring weather in Sulphur
Spring in Sulphur is characterized by gradually rising temperatures and increasing rainfall. From March through May, temperatures ascend from a mild 63.3°F (17.4°C) to a more balmy 71.1°F (21.7°C). The number of daylight hours swiftly expand to a full 14 by the end of the season, while sunshine hours hover around 7.8 to 8.5 hours per day. Humidity smoothly transits from 69% to a higher side of 78%. Rainfall starts moderately in March with 2.09" (53mm), then escalates to a season-high 4.37" (111mm) by May.
Summer weather in Sulphur
From June through August, summers in Sulphur are notably hot and humid. Average temperatures peak at a scorching 93.4°F (34.1°C) in August. Although both June and July hit highs around 87.1°F (30.6°C) and 92.1°F (33.4°C) respectively. The season is quite humid, with relative humidity ranging from 74% in June to a low of 61% by end of August. Despite this, the summer months are bright, with sunshine hours peaking at an impressive 10.9 a day in July.
Autumn weather in Sulphur
Autumn months in Sulphur, from September through November, see a receding of summer's high temperatures. September starts with an average high 84.6°F (29.2°C), and by November temperatures cool down to a much more moderate 60.6°F (15.9°C). Relative humidity throughout the season remains fairly consistent, hovering around the 68% to 69% mark. The volume of rainfall experiences a downward trend, except for a slight surge in October to 3.19" (81mm), from 2.83" (72mm) in September and then decreasing in November to 1.46" (37mm).
Winter weather in Sulphur
Winter in Sulphur is generally mild with an average high temperature of 50.5°F (10.3°C) in December, dropping slightly to 50.2°F (10.1°C) in January. The chilliest nights of the year occur in January with an average low of 33.4°F (0.8°C). Relative humidity levels during winter months remain fairly steady, at around 70%, contributing to the nippy feel in the air. Snowfall in winter is minimal, with a total of 0.85" (22mm) throughout the season. Being the season with the shortest days, daylight hovers around 10 hours, while sunshine persist at an average of 6 hours per day.
Weather in January
Sulphur, Oklahoma, starts the year with a cool and slightly gloomy weather. The average daytime temperature rises to 50.2°F (10.1°C) and decreases to 33.4°F (0.8°C) after sunset. Describing it as a chilly month would be accurate. Weather in January »
Weather in February
The chills slightly recede as February brings a modest increase in the recorded temperatures, hinting at the forthcoming spring. The snowfall inches up to 1.3in, sprinkling the town in white and transforming the landscape into a winter wonderland. Weather in February »
Weather in March
Marking the onset of spring, March insinuates a perceptible transition in Sulphur's weather narrative. The month witnesses an increase in rainfall, recorded as 2.09in, signaling the arrival of the wet season. The temperature elevates further, thawing the residuals of winter's chill. Weather in March »
Weather in April
April in Sulphur exhibits the supremacy of spring in full measure. A significant increase in rainfall ensures a thriving flora, rendering the landscape lush and green. Unfolding warmth during the day and a tad chilly evenings chaperone outdoor enthusiasts into nature's lap. Weather in April »
Weather in May
Continuing the spring saga, May introduces a noticeable increase in the relative humidity, touching a high of 78%. The weather holds additional warmth and the city basks in longer sunlight hours, strolling into the boundary of summer. Weather in May »
Weather in June
June marks the advent of summer, swapping the rain-drenched trees with abundant sunshine. The temperature escalates, pushing the mercury up and intensifying the warmth around Sulphur. With summer in full swing, a dip in the Little Niagara provides the much-needed reprieve. Weather in June »
Weather in July
The heat increment reaches its zenith in July, recording the year's highest average temperature of 92.1°F (33.4°C). Sulphur sizzles in summer's splendor, accentuating the heat further. Despite the thermal intensity, the enthusiasm remains unhindered as locals and tourists alike continue to explore various recreation options like golfing and camping. At the onset of July, Sulphur records an average high-temperature of a still hot 92.1°F (33.4°C), showing little deviation from the preceding month. Weather in July »
Weather in August
The heated grip of July loosens slightly in August, allowing a mildly reduced temperature in Sulphur. August holds the summer baton, maintaining the warm season's rhythm and theme. Load up the boats for a family day at the Lake of the Arbuckles, or enjoy sumptuous summer barbecues. Weather in August »
Weather in September
September proposes a recess from the summer blaze as temperatures initiate their downward journey. With rainfall touching 2.83in, the first whispers of fall become audible amidst the nightly breeze. This month sets the ball rolling for the season of mellow fruitfulness. Weather in September »
Weather in October
As autumn surfaces in its full grandeur, October in Sulphur embraces a more neutral weather temperament. A subtle and serene transition from the passionate summer to a calming winter becomes evident. The town dons the fall colors in style - a spectacle best savored with a scenic drive or a quiet picnic. With October's arrival, Sulphur sees a decrease in average high-temperatures, moving from a moderately hot 84.6°F (29.2°C) in September to a pleasant 72.3°F (22.4°C). Weather in October »
Weather in November
November takes the baton from autumn and races towards the onset of winter. With temperatures averaging between 60.6°F (15.9°C) and 43.7°F (6.5°C), Sulphur begins to reacquaint with the winter chill. The fall foliage turning into a wintry landscape contracts the daylight hours and draws people indoors to their cozy hearths. With November's onset, the weather in Sulphur shows a temperature decrease, transitioning from a pleasant 72.3°F (22.4°C) in October to a moderate 60.6°F (15.9°C). Weather in November »
Weather in December
Winter entrenches itself in Sulphur with December. Snowfall takes a slight uptick, reaching 0.51in, and shrouds the city under a wintery spell. Amidst the holiday cheer, December's weather provides the classic backdrop of snow-capped roofs and frosted trees. Weather in December »
Updated: Aug 21, 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
What time of the year is the coldest?
The coldest period is January, when temperatures fluctuate between an average high of 50.2°F (10.1°C) and a low of 33.4°F (0.8°C).
What is the driest month?
January is the month with the least rainfall. Rain falls for 6.3 days and accumulates 1.34" (34mm) of precipitation.
How much does it rain?
In Sulphur, during the entire year, the rain falls for 129 days and collects up to 27.91" (709mm) of precipitation.
When does it snow in Sulphur?
January through April, November and December are months with snowfall.
How much does it snow?
In Sulphur, during the entire year, snow falls for 5.3 days and aggregates up to 2.6" (66mm) of snow.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 2 days and typically aggregates up to 1.3" (33mm) of snow.
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.
What is the most humid month?
With an average relative humidity of 78%, May is the most humid month.
What is the rainiest month?
May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 4.37" (111mm) of precipitation.
When it does not snow?
In Sulphur, snow does not fall in May through October.
When are the longest days?
The month with the longest days is June, with an average of 14h and 24min of daylight.
What is the month with the highest UV index?
The months with the highest UV index in Sulphur are June through August, with an average maximum UV index of 7.
What month has the most sunshine?
With an average of 10.9h of sunshine, July has the most sunshine of the year.
What is the hottest time of year?
Sulphur's warmest month, August, registers temperatures that range from a high of 93.4°F (34.1°C) to a low of 72.1°F (22.3°C).
What is the least humid month?
August is the least humid month, with an average relative humidity of 61%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 54min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.5h of sunshine.
What is the month with the lowest UV index?
With an average maximum UV index of 2, December is the month with the lowest UV index.
Average temperature
Sulphur, OK
The warmest month (with the highest average high temperature) is August (93.4°F).
The month with the lowest average high temperature is January (50.2°F).
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure
Sulphur, OK
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Sulphur, OK
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.7mph - Average wind speed in March:
11.1mph - Average wind speed in April:
11.1mph - Average wind speed in May:
9.7mph - Average wind speed in June:
8.6mph
- Average wind speed in July:
7.6mph - Average wind speed in August:
7.8mph - Average wind speed in September:
7.7mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity
Sulphur, OK
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (61%).
Average rainfall
Sulphur, OK
- Average rainfall in January:
1.34" - Average rainfall in February:
1.42" - Average rainfall in March:
2.09" - Average rainfall in April:
2.83" - Average rainfall in May:
4.37" - Average rainfall in June:
2.4"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.13" - Average rainfall in September:
2.83" - Average rainfall in October:
3.19" - Average rainfall in November:
1.46" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days
Sulphur, OK
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
8.1 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
11.5 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
11 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (6.3 days).
Average snowfall
Sulphur, OK
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Sulphur, OK
- Average snowfall days in January:
1 days - Average snowfall days in February:
2 days - Average snowfall days in March:
0.6 days - Average snowfall days in April:
0.1 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:
0.5 days - Average snowfall days in December:
1.1 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Sulphur, OK
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
6h and 0min - Average sunshine in February:
6h and 5min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 3min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 5min - Average sunshine in September:
8h and 1min - Average sunshine in October:
6h and 3min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days
Sulphur, OK
- Average sunshine days in January:
22.9 days - Average sunshine days in February:
17.1 days - Average sunshine days in March:
16 days - Average sunshine days in April:
16.2 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
16.6 days
- Average sunshine days in July:
16.7 days - Average sunshine days in August:
17.2 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
21 days
The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is May (14.3 days).
Average UV index
Sulphur, OK
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover
Sulphur, OK
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility
Sulphur, OK
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).
Sulphur, Oklahoma, USA
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