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Contents
- The climate of Helena
- The best time to visit Helena
- The worst time to visit Helena
- Spring weather in Helena
- Summer weather in Helena
- Autumn weather in Helena
- Winter weather in Helena
- 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 Helena
Helena, which is nestled in Alabama, USA, is characteristically Cfa on the Köppen climate classification, translating to a Humid subtropical climate with no defined dry season. With this classification, the weather of Helena exhibits significant deviations in temperatures, humidity, and rainfall throughout the year.
Delving into the specifics, temperatures fluctuate notably from the coldest month of January with lows of 36°F (2.2°C) to the hottest month of July, showcasing highs around 90.5°F (32.5°C). Similarly, another fluctuation can be seen in humidity, with January and December seeing the highest relative humidity percentages of 80 ever so slightly higher than the milder humid months in September through November with 72-73. Rainfall also sees significant changes from month to month, hitting its peak in April with 4.09" (104mm) of rain and dropping to its lowest in September with 2.36" (60mm).
An interesting pattern occurs with regard to sunshine hours. The maximum sunlight hours of 14.3 are received in June while December has the least with 10 hours. However, the amount of sunshine does not correspond directly to clear days, as June has only 9.8 clear days, while the maximum clear days are in October and November, with 19.7 and 19.4 respectively. These unique patterns define the climate of Helena, Alabama.
Delving into the specifics, temperatures fluctuate notably from the coldest month of January with lows of 36°F (2.2°C) to the hottest month of July, showcasing highs around 90.5°F (32.5°C). Similarly, another fluctuation can be seen in humidity, with January and December seeing the highest relative humidity percentages of 80 ever so slightly higher than the milder humid months in September through November with 72-73. Rainfall also sees significant changes from month to month, hitting its peak in April with 4.09" (104mm) of rain and dropping to its lowest in September with 2.36" (60mm).
An interesting pattern occurs with regard to sunshine hours. The maximum sunlight hours of 14.3 are received in June while December has the least with 10 hours. However, the amount of sunshine does not correspond directly to clear days, as June has only 9.8 clear days, while the maximum clear days are in October and November, with 19.7 and 19.4 respectively. These unique patterns define the climate of Helena, Alabama.
The best time to visit Helena
Rooted in the climatic data provided, it's noteworthy that the optimal time to visit Helena would be from April to June. During these months, the temperatures range from a pleasant 64.4°F (18°C) to 88.7°F (31.5°C). Combined with humidity hovering between 74 and 73%, the atmosphere is enjoyable, promoting outdoor activities. The rainfall is also moderate, ranging from 3.07" (78mm) to 4.09" (104mm), ensuring the visitors have only mild disruptions to their plans due to weather.
The worst time to visit Helena
On the flip side, the least favorable period to plan a visit would be the month of July. The humidity remains at a peak of 74% while the temperatures soar up to a sweltering 90.5°F (32.5°C). Coupled with rainfall of 3.23" (82mm), the weather conditions can be quite strenuous, even for the seasoned travelers. Hence it's advisable to postpone any sightseeing plans during this time.
Spring weather in Helena
Spring ushers in moderately warm weather to Helena, with temperatures varying between a comfortable 51.1°F (10.6°C) in March and going up to 73.9°F (23.3°C) by the end of May. The daylight hours also see a steep increase, from 12 hours in March to about nearly 14 hours by May end, providing ample opportunities for outdoor activities.
Summer weather in Helena
The summer season in Helena, which stretches from June to August, is characterized by high temperatures peaking at 90.5°F (32.5°C) in July. The humidity also remains constant around 73% throughout these months. However, an evident increase in the amount of rainfall is seen, especially in June and August with 3.5 and 3.82" (97mm) respectively.
Autumn weather in Helena
During the autumn months of September through November, the temperatures begin to fall, starting from 85.1°F (29.5°C) in September down to a milder 62.4°F (16.9°C) by November. Concurrently, the daylight hours also decrease gradually from about 12 hours in September to approximately 10 hours by November's end.
Winter weather in Helena
The winter season commences in December and lasts up to February. The average high temperature falls from 55°F (12.8°C) in December to 51.1°F (10.6°C) in February, while lows hover around 40.5°F (4.7°C). A noteworthy aspect of this season is the precipitation in the form of snowfall albeit minimal, with the highest in February at 0.39" (10mm). The daylight hours too are at the annual low of about 10 hours throughout the winter season.
Weather in January
January in Helena, Alabama brings with it the chill of winter and modest daylight hours. Temperatures tend to remain relatively low, with the highest daily ever recorded at 51.1°F (10.6°C). January is when snowfall is most likely to occur, making it a picturesque time for those enjoying the winter landscape. Weather in January »
Weather in February
In contrast to the preceding month, February shows signs of climatic transition as temperatures gradually adjust towards more spring-like conditions. With an exceptional low temperature of 40.5°F (4.7°C), this time displays a rapid decrease in snowfall. Weather in February »
Weather in March
March is the gateway to spring, with Helena, Alabama experiencing a considerable upturn in temperature which peaks at 64.4°F (18°C). This month sees a decline in both relative humidity and cloud cover, leading to clearer skies. Weather in March »
Weather in April
Helena steps into full-swing spring in April, characterized by blossoming flora and fauna around the city. The rapid heat up comes as no surprise with a high temperature peaking at 73.9°F (23.3°C). Longer and sunnier days make this month perfectly suited for all sorts of outdoor activities. Weather in April »
Weather in May
May is when the summer heat starts to creep into Helena, Alabama, setting the stage for the hot months ahead. The temperature consistently rises throughout the month reaching as high as 81.5°F (27.5°C). It's also notable that the days become significantly longer during May. Weather in May »
Weather in June
June marks the onset of summer, and in Helena, it doesn't disappoint with a temperature soaring to a scorching 88.7°F (31.5°C). Although with the rise in temperature, June also brings an increase in rainfall, cooling off some of the heat. Weather in June »
Weather in July
As the calendar turns to July, the heat in Helena, Alabama, rises to its peak, with the mercury occasionally hitting a sweltering 90.5°F (32.5°C). It's important to note, however, that Helena also experiences its most consistent rainfall during July. Weather in July »
Weather in August
August continues to maintain the high-summer heat with temperatures registering as high as 90.1°F (32.3°C). This month, though, sees a noticeable decline in rainfall from July, easing the humidity levels slightly. The days are still quite long, with plenty of sunshine to enjoy. Weather in August »
Weather in September
September in Helena, Alabama witnesses a slight relief from the summer's high temperatures, with the mercury levels dropping to 85.1°F (29.5°C). It showcases shorter days and milder nights as autumn begin to settle in. September also brings an appreciable decrease in rain, contributing to more dry days. Weather in September »
Weather in October
October brings a noticeable change in Helena's weather. From a noteworthy 74.5°F (23.6°C), it's a month when temperatures start to drop, paving the way for upcoming winter. The hues of fall become apparent as the city transitions from summer to winter. Weather in October »
Weather in November
November in Helena, Alabama signposts the onset of winter with a sharp plunge in temperatures. From its summertime peak, the temperature has fallen to a significant low of 62.4°F (16.9°C). It's expected that the daylight hours will continue to diminish as the month progresses. Weather in November »
Weather in December
December sees the full arrival of winter in Helena, with temperatures dropping even further to 55°F (12.8°C). This month, the city experiences the shortest days of the year, compounding the typical winter chill. It's also the period when snowfalls are more likely than any other time in the year. Weather in December »
Updated: Aug 8, 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?
In Helena, January is the month with the lowest recorded average temperatures, measuring a high of 51.1°F (10.6°C) and a low of 36°F (2.2°C).
How much does it rain?
Throughout the year, there are 174.2 rainfall days, and 40.08" (1018mm) of precipitation is accumulated.
When does it snow?
January through March, November and December are months with snowfall.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 1.2 days and typically aggregates up to 0.79" (20mm) of snow.
How much does it snow?
Throughout the year, there are 3.3 snowfall days, and 1.81" (46mm) of snow is accumulated.
When is the lowest UV index?
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3.
What is the month with the least sunshine in Helena?
February and December, with an average of 4.9h of sunshine, are months with the least sunshine.
When is Daylight Saving Time (DST) in Helena?
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 rainiest month?
The month with the most rainfall is April, when the rain falls for 13.5 days and typically aggregates up to 4.09" (104mm) of precipitation.
When it does not snow?
In Helena, snow does not fall in April through October.
When are the longest days?
The month with the longest days is June, with an average of 14h and 18min of daylight.
What month has the most sunshine?
With an average of 10.7h of sunshine, June has the most sunshine of the year.
What is the warmest month?
The warmest time of the year is July, with temperatures averaging a high of 90.5°F (32.5°C) and a low of 71.2°F (21.8°C).
When is the highest UV index?
August is the month with the highest UV index, with an average maximum UV index of 7.
What is the driest month?
September and October are months with the least rain when the rain falls for 14.3 days and typically aggregates up to 2.36" (60mm) of rain.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the most humid month?
With an average relative humidity of 80%, December is the most humid month.
What is the month with the shortest days?
With an average of 10h and 0min of daylight, December has the shortest days of the year.
Average temperature
Helena, AL
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (51.1°F).
The month with the highest average low temperature is August (71.4°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure
Helena, AL
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed
Helena, AL
- Average wind speed in January:
7.2mph - Average wind speed in February:
7.3mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.1mph - Average wind speed in May:
5.7mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.4mph - Average wind speed in August:
4.4mph - Average wind speed in September:
4.9mph - Average wind speed in October:
6mph - Average wind speed in November:
6.5mph - Average wind speed in December:
7mph
The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).
Average humidity
Helena, AL
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Helena, AL
- Average rainfall in January:
3.5" - Average rainfall in February:
3.82" - Average rainfall in March:
3.62" - Average rainfall in April:
4.09" - Average rainfall in May:
3.07" - Average rainfall in June:
3.5"
- Average rainfall in July:
3.23" - Average rainfall in August:
3.82" - Average rainfall in September:
2.36" - Average rainfall in October:
2.36" - Average rainfall in November:
2.72" - Average rainfall in December:
3.98"
The wettest month (with the highest rainfall) is April (4.09").
The driest months (with the least rainfall) are September and October (2.36").
Average rainfall days
Helena, AL
- Average rainfall days in January:
11 days - Average rainfall days in February:
12.7 days - Average rainfall days in March:
14.8 days - Average rainfall days in April:
13.5 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
18.3 days
- Average rainfall days in July:
21.8 days - Average rainfall days in August:
20.9 days - Average rainfall days in September:
14.3 days - Average rainfall days in October:
10.1 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
12.7 days
The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is November (9.3 days).
Average snowfall
Helena, AL
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Helena, AL
- Average snowfall days in January:
1.2 days - Average snowfall days in February:
1 days - Average snowfall days in March:
0.3 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:
0.2 days - Average snowfall days in December:
0.6 days
The month with the highest number of snowfall days is January (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Helena, AL
- 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 0min - Average daylight in May:
13h and 5min - 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:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 3min - Average sunshine in April:
9h and 4min - Average sunshine in May:
10h and 1min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 0min - Average sunshine in October:
7h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days
Helena, AL
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
9.8 days
- Average sunshine days in July:
7.3 days - Average sunshine days in August:
8.4 days - Average sunshine days in September:
13.5 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
15.9 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is July (7.3 days).
Average UV index
Helena, AL
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover
Helena, AL
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Helena, AL
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).
Helena, Alabama, USA
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