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
Ninilchik observes a small decrease in the average high-temperature with the arrival of September, falling from August's moderate 59.4°F (15.2°C) to a fresh 52.5°F (11.4°C). An average low-temperature of 43.5°F (6.4°C) characterizes Ninilchik's September nights.Humidity
In September, the average relative humidity is 81%.Rainfall
In Ninilchik, in September, it is raining for 19.7 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, there are 167.3 rainfall days, and 24.65" (626mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, there are 80.3 snowfall days, and 44.88" (1140mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 49min.On the first day of September, sunrise is at 7:04 am and sunset at 9:08 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 7:40 pm AKDT.
Sunshine
In Ninilchik, the average sunshine in September is 6.4h.UV index
In Ninilchik, Alaska, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 in September translates into these instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Ninilchik?
What is the average humidity in September?
How much does it rain in September?
When does it start snowing?
How many hours of daylight does Ninilchik have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Ninilchik have in September?
What is the UV index reading in September?
Average temperature in September
Ninilchik, AK
- Average high temperature in September: 52.5°F
The warmest month (with the highest average high temperature) is July (61.2°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in September: 43.5°F
The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in September
Ninilchik, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.63"Hg).
Average wind speed in September
Ninilchik, AK
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are January, November and December (8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in September
Ninilchik, AK
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Ninilchik, AK
- Average rainfall in September: 3.31"
The wettest month (with the highest rainfall) is October (3.39").
The driest months (with the least rainfall) are March and May (1.34").
Average rainfall days in September
Ninilchik, AK
- Average rainfall days in September: 19.7 days
The month with the highest number of rainy days is September (19.7 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in September
Ninilchik, AK
- Average snowfall in September: 0.35"
The month with the highest snowfall is December (10.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Ninilchik, AK
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (15.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ninilchik, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Ninilchik, AK
- Average sunshine days in September: 8.9 days
The months with the most sunshine days are January and March (13.2 days).
The month with the least sunshine days is September (8.9 days).
Average UV index in September
Ninilchik, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are February and October (UV index 1).
Average cloud cover in September
Ninilchik, AK
- Average cloud cover in September: 50
The month with the most cloud cover is December (Cloud cover 56).
The months with the least cloud cover are June and July (Cloud cover 46).
Average visibility in September
Ninilchik, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).
Ninilchik, Alaska, USA
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