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Contents
- 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
Weather in January
January, the same as December, in Helena, New York, is a freezing cold winter month, with an average temperature ranging between max 23°F (-5°C) and min 9.9°F (-12.3°C). In Helena, the lowest average temperatures are observed in January, with a high of 23°F (-5°C) and a low of 9.9°F (-12.3°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Helena, New York, with temperature in the range of an average low of 12.4°F (-10.9°C) and an average high of 25.5°F (-3.6°C). Helena records an average high-temperature of a still subzero cold 25.5°F (-3.6°C) in February, maintaining a close correlation with January's 23°F (-5°C). Weather in February »
Weather in March
March, the first month of the spring in Helena, is a wintry month, with an average temperature fluctuating between 35.4°F (1.9°C) and 22.5°F (-5.3°C). The shift into March is marked by a rise in the average high-temperature, moving from February's freezing cold 25.5°F (-3.6°C) to a cold 35.4°F (1.9°C). Weather in March »
Weather in April
April is a fresh spring month in Helena, New York, with an average temperature varying between 34.2°F (1.2°C) and 50.4°F (10.2°C). Witnessing a clear upsurge, the average high-temperature during April escalates from March's icy 35.4°F (1.9°C) to a fresh 50.4°F (10.2°C). Weather in April »
Weather in May
May, the last month of the spring in Helena, is an enjoyable month, with an average temperature fluctuating between 46°F (7.8°C) and 64.8°F (18.2°C). May's onset is marked by a clear temperature increase, soaring from a cool 50.4°F (10.2°C) in April to an enjoyable 64.8°F (18.2°C). Weather in May »
Weather in June
June, the first month of the summer in Helena, is an agreeable month, with an average temperature fluctuating between 53.1°F (11.7°C) and 71.1°F (21.7°C). The onset of June brings a minor temperature shift, with the average high-temperature moving from a refreshing 64.8°F (18.2°C) in May to a pleasant 71.1°F (21.7°C). Weather in June »
Weather in July
July in Helena, New York, is a warm summer month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 59.2°F (15.1°C). In Helena, the highest average temperatures are observed in July, with a high of 77.5°F (25.3°C) and a low of 59.2°F (15.1°C). Weather in July »
Weather in August
August, the last month of the summer in Helena, is also a moderately hot month, with an average temperature fluctuating between 57.9°F (14.4°C) and 75.9°F (24.4°C). Helena indicates an average high-temperature of a still warm 75.9°F (24.4°C) in August, showing minor variation from July's 77.5°F (25.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Helena, New York, with an average temperature fluctuating between 50.9°F (10.5°C) and 69.3°F (20.7°C). Helena's progression into September involves a gentle drop in the average high-temperature, from a warm 75.9°F (24.4°C) in August to a pleasant 69.3°F (20.7°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Helena, New York, with an average temperature ranging between max 55.8°F (13.2°C) and min 42.3°F (5.7°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's agreeable 69.3°F (20.7°C) to a moderate 55.8°F (13.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a wintry month in Helena, New York, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 42.1°F (5.6°C). The arrival of November corresponds with a temperature reduction, down from October's moderate 55.8°F (13.2°C) to a cold 42.1°F (5.6°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Helena, New York, with an average temperature fluctuating between 29.7°F (-1.3°C) and 19.4°F (-7°C). The shift from November to December involves a decrease in the average high-temperature, dropping from a cold 42.1°F (5.6°C) to a freezing cold 29.7°F (-1.3°C). Weather in December »
Updated: Jul 7, 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 month is the coldest?
With an average high-temperature of 23°F (-5°C) and an average low-temperature of 9.9°F (-12.3°C), January is the coldest month.
What is the most humid month?
January and February, with an average relative humidity of 90%, are most humid months.
How much does it rain?
In Helena, during the entire year, the rain falls for 160.1 days and collects up to 29.76" (756mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 16.5 days and typically aggregates up to 9.02" (229mm) of snow.
How much does it snow?
In Helena, during the entire year, snow falls for 70.6 days and aggregates up to 36.02" (915mm) of snow.
What is the month with the lowest UV index?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 2.7h of sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Helena, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month?
April is the least humid month, with an average relative humidity of 77%.
When it does not snow in Helena?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 30min of daylight.
What part of the year is the hottest?
Helena's temperatures peak on average in July, reaching 77.5°F (25.3°C) at their highest and 59.2°F (15.1°C) at their lowest.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.1h of sunshine.
What is the month with the highest UV index?
The month with the highest UV index is July, with an average maximum UV index of 6.
What is the rainiest month in Helena?
August is the month with the most rainfall. Rain falls for 17.4 days and accumulates 3.23" (82mm) of precipitation.
What is the driest month?
September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 2.01" (51mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 8h and 48min of daylight.
Average temperature
Helena, NY
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (23°F).
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure
Helena, NY
- Average pressure in January:
30.02"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.04"Hg
The months with the highest atmospheric pressure are March and November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Helena, NY
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.8mph - Average wind speed in March:
8.4mph - Average wind speed in April:
8.6mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6.6mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.1mph - Average wind speed in December:
8.1mph
The windiest month (with the highest average wind speed) is February (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity
Helena, NY
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall
Helena, NY
- Average rainfall in January:
2.09" - Average rainfall in February:
2.09" - Average rainfall in March:
2.09" - Average rainfall in April:
2.64" - Average rainfall in May:
2.64" - Average rainfall in June:
2.72"
- Average rainfall in July:
2.8" - Average rainfall in August:
3.23" - Average rainfall in September:
2.01" - Average rainfall in October:
2.87" - Average rainfall in November:
2.28" - Average rainfall in December:
2.32"
The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days
Helena, NY
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
18.3 days
- Average rainfall days in July:
18.8 days - Average rainfall days in August:
17.4 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
15.4 days - Average rainfall days in November:
10.8 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is February (6.2 days).
Average snowfall
Helena, NY
- Average snowfall in January:
9.02" - Average snowfall in February:
8.62" - Average snowfall in March:
4.76" - Average snowfall in April:
2.72" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is January (9.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Helena, NY
- Average snowfall days in January:
16.5 days - Average snowfall days in February:
17.1 days - Average snowfall days in March:
11.5 days - Average snowfall days in April:
4.8 days - Average snowfall days in May:
0.5 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:
1.5 days - Average snowfall days in November:
5.6 days - Average snowfall days in December:
13.1 days
The month with the highest number of snowfall days is February (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Helena, NY
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
2h and 5min - Average sunshine in February:
2h and 4min - Average sunshine in March:
4h and 3min - Average sunshine in April:
6h and 4min - Average sunshine in May:
8h and 2min - Average sunshine in June:
8h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
4h and 4min - Average sunshine in November:
4h and 2min - Average sunshine in December:
3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days
Helena, NY
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
9.8 days - Average sunshine days in March:
12.6 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.1 days - Average sunshine days in August:
10.9 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
13.4 days - Average sunshine days in November:
16 days - Average sunshine days in December:
11.6 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is July (9.1 days).
Average UV index
Helena, NY
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Helena, NY
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Helena, NY
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Helena, New York, USA
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