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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 85.6°F (29.8°C) in August to a still warm 78.3°F (25.7°C). Nighttime temperature experiences an average drop to a refreshing 58.6°F (14.8°C) in September.Humidity
In Alamo, the average relative humidity in September is 32%.Rainfall
In September, in Alamo, the rain falls for 7 days. Throughout September, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 75.1 rainfall days, and 11.26" (286mm) of precipitation is accumulated.Snowfall
In Alamo, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:08 pm. On the last day of September, in Alamo, sunrise is at 6:35 am and sunset at 6:24 pm PDT.
Sunshine
In Alamo, the average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 5 during September translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Around midday, solar radiation is most harmful; hence, exposure should be limited. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What are the temperatures in Alamo in September?
What is the average humidity in September in Alamo?
How much does it rain in Alamo in September?
When it does not snow in Alamo?
How many hours of daylight does Alamo have in September?
When is the sunrise / sunset in September in Alamo?
How long on average sun shines in September in Alamo?
What is the UV index reading in September in Alamo?
Average temperature in September
Alamo, NV
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is December (41.5°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).
Average pressure in September
Alamo, NV
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Alamo, NV
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are January, November and December (7.1mph).
Average humidity in September
Alamo, NV
- Average humidity in September: 32%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is June (20%).
Average rainfall in September
Alamo, NV
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (1.46").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in September
Alamo, NV
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is July (10.5 days).
The month with the least rainy days is June (3.1 days).
Average snowfall in September
Alamo, NV
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Alamo, NV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (4.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alamo, NV
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Alamo, NV
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is June (25.4 days).
The months with the least sunshine days are July and August (18.3 days).
Average UV index in September
Alamo, NV
- Average UV index in September: 5
The months with the highest UV index are May, 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
Alamo, NV
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Alamo, NV
- 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).
Alamo, Nevada, USA
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