September weather forecast
Alliance, NE

• 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

Average temperature in September
Alliance, NE

• Average high temperature in September: 76.5°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is December (34.2°F).

• Average low temperature in September: 55°F

The month with the highest average low temperature is July (64.8°F).
The coldest months (with the lowest average low temperature) are January and December (20.3°F).

Average pressure in September
Alliance, NE

• Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in September
Alliance, NE

• Average wind speed in September: 11.1mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (10.1mph).

Average humidity in September
Alliance, NE

• Average humidity in September: 50%

The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is August (49%).

Average rainfall in September
Alliance, NE

• Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in September
Alliance, NE

• Average rainfall days in September: 8.3 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is December (3.1 days).

Average snowfall in September
Alliance, NE

• Average snowfall in September: 0.04"

The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July and August (0").

Average snowfall days in September
Alliance, NE

• Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in September /
Average sunshine in September
Alliance, NE

• Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

• Average sunshine in September: 10h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

Average sunshine days in September
Alliance, NE

• Average sunshine days in September: 19 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (12 days).

Average UV index in September
Alliance, NE

• Average UV index in September: 4

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Alliance, NE

• Average cloud cover in September: 19

The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in September
Alliance, 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).