Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 84°F (28.9°C) in August to a still warm 75.2°F (24°C). Nightly temperatures in Johnstown drop to an average low of 55.6°F (13.1°C) in September.Humidity
September is the least humid month, with an average relative humidity of 59%.Rainfall
In September, the rain falls for 10.4 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. Throughout the year, in Johnstown, Nebraska, there are 103.2 rainfall days, and 17.44" (443mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Johnstown. Throughout September, in the average 0.1 snowfall days, it receives 0.24" (6mm) of snow. In Johnstown, Nebraska, during the entire year, snow falls for 39.8 days and aggregates up to 13.94" (354mm) of snow.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 7:06 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:22 pm CDT.
Sunshine
The average sunshine in September in Johnstown is 8.9h.UV index
In September, the average daily maximum UV index in Johnstown is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the temperature in September in Johnstown?
What is the least humid month in Johnstown?
What is the average humidity in September in Johnstown?
How much does it rain in Johnstown in September?
When does it start to snow in Johnstown?
How many hours of daylight does Johnstown have in September?
What time are sunrise and sunset in September in Johnstown?
How many hours of sunshine does Johnstown have in September?
How high is the UV index in September in Johnstown?
Average temperature in September
Johnstown, NE
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Johnstown, NE
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Johnstown, NE
- Average wind speed in September: 11.7mph
The windiest month (with the highest average wind speed) is April (13.3mph).
The calmest months (with the lowest average wind speed) are July and August (10.7mph).
Average humidity in September
Johnstown, NE
- Average humidity in September: 59%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is September (59%).
Average rainfall in September
Johnstown, NE
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Johnstown, NE
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (14.8 days).
The months with the least rainy days are February and December (2.3 days).
Average snowfall in September
Johnstown, NE
- Average snowfall in September: 0.24"
The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Johnstown, NE
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Johnstown, NE
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Johnstown, NE
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in September
Johnstown, NE
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Johnstown, NE
- Average cloud cover in September: 23
The months with the most cloud cover are January and February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Johnstown, NE
- Average visibility in September: 6mi
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).
Johnstown, Nebraska, USA
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