Climate and monthly weather forecastJohnstown, OH
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Johnstown, Ohio, with an average temperature varying between 32.5°F (0.3°C) and 20.3°F (-6.5°C). With average temperatures fluctuating between a high of 32.5°F (0.3°C) and a low of 20.3°F (-6.5°C), January stands out as the coldest month. Weather in January »Weather in February
February, the last month of the winter in Johnstown, is also a wintry month, with an average temperature varying between 23.5°F (-4.7°C) and 36.9°F (2.7°C). The shift to February signals an average high-temperature of a still cold 36.9°F (2.7°C), subtly varied from January's 32.5°F (0.3°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Johnstown, Ohio, with an average temperature ranging between min 32.2°F (0.1°C) and max 48°F (8.9°C). March brings a rise in Johnstown's average high-temperature, moving from an icy 36.9°F (2.7°C) in February to a frosty 48°F (8.9°C). Weather in March »Weather in April
April in Johnstown, Ohio, is a moderate spring month, with an average temperature ranging between min 42.4°F (5.8°C) and max 60.1°F (15.6°C). The arrival of April signals an increase in the average high-temperature, moving from a frosty 48°F (8.9°C) in March to a mild 60.1°F (15.6°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Johnstown, Ohio, with an average temperature varying between 52.5°F (11.4°C) and 70.5°F (21.4°C). The shift into May brings an increase in the average high-temperature, moving from a refreshing 60.1°F (15.6°C) in April to a pleasant 70.5°F (21.4°C). Weather in May »Weather in June
June, the first month of the summer in Johnstown, is a moderately hot month, with an average temperature fluctuating between 59.7°F (15.4°C) and 77.9°F (25.5°C). The shift into June is characterized by a subtle rise in the average high-temperature, transitioning from May's pleasant 70.5°F (21.4°C) to a moderately hot 77.9°F (25.5°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Johnstown, Ohio, with an average temperature varying between 81.3°F (27.4°C) and 63.3°F (17.4°C). July, noted for its average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 63.3°F (17.4°C), is considered the warmest month. The heat index for July is computed to be a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Johnstown, is another warm month, with an average temperature ranging between min 61.5°F (16.4°C) and max 80.1°F (26.7°C). Johnstown's shift into August is marked by a subtle change to a still moderately hot 80.1°F (26.7°C) from July's 81.3°F (27.4°C) in temperature. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Johnstown, Ohio, with an average temperature ranging between max 74.7°F (23.7°C) and min 55.9°F (13.3°C). The transition into September subtly indicates a reduction in the average high-temperature, down to a still moderately hot 74.7°F (23.7°C) from August's warm 80.1°F (26.7°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Johnstown, Ohio, with temperature in the range of an average high of 61.9°F (16.6°C) and an average low of 45.3°F (7.4°C). The beginning of October marks a decrease in the average high-temperature, transitioning from a warm 74.7°F (23.7°C) in September to an enjoyable 61.9°F (16.6°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Johnstown, Ohio, with an average temperature fluctuating between 48.6°F (9.2°C) and 34.7°F (1.5°C). As November begins, there is a decrease in the average high-temperature, falling from an enjoyable 61.9°F (16.6°C) in October to a chilly 48.6°F (9.2°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Johnstown, Ohio, with an average temperature fluctuating between 28.4°F (-2°C) and 38.7°F (3.7°C). Arrival of December comes with a reduction in the average high-temperature, falling from a chilly 48.6°F (9.2°C) in November to a wintry 38.7°F (3.7°C). Weather in December »Updated: Feb 13, 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
January tends to be the coldest month, with temperatures averaging a daily high of 32.5°F (0.3°C) and a low of 20.3°F (-6.5°C).
With an average relative humidity of 84%, January is the most humid month in Johnstown, Ohio.
In Johnstown, during the entire year, the rain falls for 176.7 days and collects up to 33.7" (856mm) of precipitation.
Months with snowfall in Johnstown, Ohio, are January through May, October through December.
January is the month with the most snowfall in Johnstown. Snow falls for 13.9 days and accumulates 4.02" (102mm) of snow.
In Johnstown, during the entire year, snow falls for 47.1 days and aggregates up to 15.43" (392mm) of snow.
With an average of 3.5h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
May is the month with the most rainfall in Johnstown. Rain falls for 20.2 days and accumulates 3.86" (98mm) of precipitation.
June through September are months without snowfall in Johnstown.
June has the longest days of the year, with an average of 15h and 0min of daylight.
July, having an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 63.3°F (17.4°C), is the warmest month.
July and August, with an average of 10.3h of sunshine, are months with the most sunshine.
The month with the highest UV index is July, with an average maximum UV index of 6.
The month with the least rainfall in Johnstown is September, when the rain falls for 14.5 days and typically collects 2.01" (51mm) of precipitation.
With an average relative humidity of 76%, November is the least humid month.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Johnstown, OH
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure
Johnstown, OH
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Johnstown, OH
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.2mph - Average wind speed in April:
9.3mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.6mph - Average wind speed in December:
9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity
Johnstown, OH
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is November (76%).
Average rainfall
Johnstown, OH
- Average rainfall in January:
2.48" - Average rainfall in February:
2.48" - Average rainfall in March:
2.99" - Average rainfall in April:
3.31" - Average rainfall in May:
3.86" - Average rainfall in June:
3.27"
- Average rainfall in July:
3.23" - Average rainfall in August:
2.56" - Average rainfall in September:
2.01" - Average rainfall in October:
2.44" - Average rainfall in November:
2.52" - Average rainfall in December:
2.56"
The wettest month (with the highest rainfall) is May (3.86").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days
Johnstown, OH
- Average rainfall days in January:
10.3 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
14.5 days - Average rainfall days in April:
16.9 days - Average rainfall days in May:
20.2 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
19.3 days - Average rainfall days in August:
16.1 days - Average rainfall days in September:
14.5 days - Average rainfall days in October:
14.1 days - Average rainfall days in November:
10.9 days - Average rainfall days in December:
12.5 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is February (9.6 days).
Average snowfall
Johnstown, OH
- Average snowfall in January:
4.02" - Average snowfall in February:
3.62" - Average snowfall in March:
2.83" - Average snowfall in April:
0.31" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Johnstown, OH
- Average snowfall days in January:
13.9 days - Average snowfall days in February:
10.9 days - Average snowfall days in March:
6.7 days - Average snowfall days in April:
1.5 days - Average snowfall days in May:
0.2 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:
0.5 days - Average snowfall days in November:
3.5 days - Average snowfall days in December:
9.9 days
The month with the highest number of snowfall days is January (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Johnstown, OH
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
3h and 30min - Average sunshine in February:
4h and 24min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 18min - Average sunshine in December:
3h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Johnstown, OH
- Average sunshine days in January:
10.5 days - Average sunshine days in February:
9.3 days - Average sunshine days in March:
11.6 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
8.2 days - Average sunshine days in June:
9.5 days
- Average sunshine days in July:
8.9 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
13.5 days - Average sunshine days in October:
14.8 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
12.1 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is May (8.2 days).
Average UV index
Johnstown, OH
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Johnstown, OH
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Johnstown, OH
The months with the highest visibility are March, April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February and September (5mi).
