September weather forecastKatalla, AK
September
Weather in September
The first month of the autumn, September, is also a fresh month in Katalla, Alaska, with an average temperature ranging between min 45.3°F (7.4°C) and max 52.5°F (11.4°C).Temperature
The average high-temperature during September is a cool 52.5°F (11.4°C), almost matching the conditions of the preceding month. A modest decline from daytime high temperatures is noticed in September, marking the average low at a frosty 45.3°F (7.4°C).Humidity
The average relative humidity in September is 82%.Rainfall
In Katalla, in September, during 20.9 rainfall days, 8.98" (228mm) of precipitation is typically accumulated. In Katalla, during the entire year, the rain falls for 191.3 days and collects up to 72.4" (1839mm) of precipitation.Snowfall
June through September are months without snowfall in Katalla.Daylight
In September, the average length of the day is 12h and 50min.On the first day of September, sunrise is at 6:35 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:11 pm AKDT.
Sunshine
In Katalla, the average sunshine in September is 5.1h.UV index
In Katalla, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Katalla, AK
- Average high temperature in September: 52.5°F
The warmest month (with the highest average high temperature) is July (58.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 45.3°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in September
Katalla, AK
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is July (30"Hg).
The month with the lowest atmospheric pressure is November (29.65"Hg).
Average wind speed in September
Katalla, AK
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are January and November (12.1mph).
The calmest month (with the lowest average wind speed) is June (5.2mph).
Average humidity in September
Katalla, AK
- Average humidity in September: 82%
The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Katalla, AK
- Average rainfall in September: 8.98"
The wettest month (with the highest rainfall) is October (9.09").
The driest month (with the least rainfall) is June (2.72").
Average rainfall days in September
Katalla, AK
- Average rainfall days in September: 20.9 days
The month with the highest number of rainy days is August (21 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in September
Katalla, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (17.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Katalla, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Katalla, AK
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in September: 5h and 6min
The months with the most sunshine are May, June and July (Average sunshine: 7h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in September
Katalla, AK
- Average sunshine days in September: 8 days
The month with the most sunshine days is July (12.1 days).
The month with the least sunshine days is September (8 days).
Average UV index in September
Katalla, AK
- Average UV index in September: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in September
Katalla, AK
- Average cloud cover in September: 63
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is May (Cloud cover 57).
Average visibility in September
Katalla, AK
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January, August and December (5mi).
