September weather forecastHannibal, NY
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Hannibal, New York, with an average temperature fluctuating between 69.4°F (20.8°C) and 57°F (13.9°C).Temperature
Hannibal measures an average high-temperature of an agreeable 69.4°F (20.8°C) in September, nearly consistent with the preceding month. Hannibal anticipates an average minimum temperature of 57°F (13.9°C) in the month of September.Humidity
September and November, with an average relative humidity of 77%, are the least humid months.Rainfall
In Hannibal, during September, the rain falls for 12.9 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, there are 152.2 rainfall days, and 19.69" (500mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Hannibal.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:31 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:48 pm EDT.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hannibal, NY
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 57°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Hannibal, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Hannibal, NY
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in September
Hannibal, NY
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are September and November (77%).
Average rainfall in September
Hannibal, NY
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in September
Hannibal, NY
- Average rainfall days in September: 12.9 days
The months with the highest number of rainy days are July and August (16.8 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in September
Hannibal, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Hannibal, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hannibal, NY
- Average daylight in September: 12h and 30min
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 0min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).
Average sunshine days in September
Hannibal, NY
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is September (14.7 days).
The month with the least sunshine days is February (7 days).
Average UV index in September
Hannibal, NY
- Average UV index in September: 4
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 in September
Hannibal, NY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Hannibal, NY
- 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).
