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
September brings a decrease in the average high-temperature, shifting from an agreeable 71.2°F (21.8°C) in August to a comfortable 61.7°F (16.5°C). Grahams Place reports a significant contrast between daytime and nighttime temperatures, with an average low of 37.6°F (3.1°C) in September.Humidity
The average relative humidity in September in Grahams Place, Montana, is 58%.Rainfall
In Grahams Place, in September, during 10.5 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, in Grahams Place, there are 123.8 rainfall days, and 24.53" (623mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grahams Place are January through July, September through December. September is the first month it typically snows. Throughout September, in the average 1.9 snowfall days, it receives 2.36" (60mm) of snow. In Grahams Place, during the entire year, snow falls for 165.6 days and aggregates up to 125.16" (3179mm) of snow.Daylight
In Grahams Place, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:49 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:08 pm MDT.
Sunshine
The average sunshine in September in Grahams Place is 9.8h.UV index
In Grahams Place, Montana, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 2 in September leads to these recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What is the temperature in September in Grahams Place?
What is the average humidity in September in Grahams Place?
How much does it rain in Grahams Place in September?
When does it start to snow in Grahams Place?
How many hours of daylight does Grahams Place have in September?
When are sunrise and sunset in September in Grahams Place?
How long on average sun shines in September in Grahams Place?
What is the UV index reading in September in Grahams Place?
Average temperature in September
Grahams Place, MT
- Average high temperature in September: 61.7°F
The warmest month (with the highest average high temperature) is July (73.2°F).
The month with the lowest average high temperature is December (20.5°F).
- Average low temperature in September: 37.6°F
The month with the highest average low temperature is August (43°F).
The coldest month (with the lowest average low temperature) is December (4.8°F).
Average pressure in September
Grahams Place, MT
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Grahams Place, MT
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January, February, March, June, November and December (6.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Grahams Place, MT
- Average humidity in September: 58%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Grahams Place, MT
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in September
Grahams Place, MT
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (4 days).
Average snowfall in September
Grahams Place, MT
- Average snowfall in September: 2.36"
The month with the highest snowfall is February (20.67").
The month with the least snowfall is August (0").
Average snowfall days in September
Grahams Place, MT
- Average snowfall days in September: 1.9 days
The month with the highest number of snowfall days is March (26.4 days).
The month with the least snowfall days is August (0 days).
Average daylight in September /
Average sunshine in September
Grahams Place, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days in September
Grahams Place, MT
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is May (3.8 days).
Average UV index in September
Grahams Place, MT
- Average UV index in September: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Grahams Place, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in September
Grahams Place, MT
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Grahams Place, Montana, USA
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