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
Transition into September marks a drop in the average high-temperature, moving from a moderately hot 81°F (27.2°C) in August to an agreeable 70°F (21.1°C). Nighttime temperature experiences an average drop to a fresh 51.6°F (10.9°C) in September.Humidity
The average relative humidity in September in Hill is 45%.Rainfall
In Hill, during September, the rain falls for 6.6 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Hill, during the entire year, the rain falls for 77.5 days and collects up to 6.5" (165mm) of precipitation.Snowfall
Months with snowfall in Hill are January through May, September through December. September is the first month it typically snows in Hill, Montana. Throughout September, in the average 0.4 snowfall days, it receives 0.55" (14mm) of snow. Throughout the year, in Hill, Montana, there are 38 snowfall days, and 8.78" (223mm) of snow is accumulated.Daylight
The average length of the day in September in Hill is 12h and 34min.On the first day of September in Hill, Montana, sunrise is at 6:42 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:04 pm MDT.
Sunshine
The average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What is the temperature in September in Hill?
What is the average humidity in September in Hill?
How many days does it rain in September in Hill?
When does it start snowing in Hill?
What is the average length of the day in September in Hill?
What time are sunrise and sunset in September in Hill?
How long on average sun shines in September in Hill?
What is the UV index intensity in September in Hill?
Average temperature in September
Hill, MT
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is August (60.3°F).
The coldest months (with the lowest average low temperature) are February and December (16.2°F).
Average pressure in September
Hill, MT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Hill, MT
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Hill, MT
- Average humidity in September: 45%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Hill, MT
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is June (1.54").
The driest months (with the least rainfall) are January and December (0.16").
Average rainfall days in September
Hill, MT
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is May (12.4 days).
The months with the least rainy days are January and February (2.1 days).
Average snowfall in September
Hill, MT
- Average snowfall in September: 0.55"
The month with the highest snowfall is April (1.65").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Hill, MT
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (6.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Hill, MT
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Hill, MT
- Average sunshine days in September: 21.4 days
The months with the most sunshine days are January and December (23.9 days).
The months with the least sunshine days are May and June (16.3 days).
Average UV index in September
Hill, MT
- 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, February, March, October, November and December (UV index 2).
Average cloud cover in September
Hill, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in September
Hill, MT
- 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).
Hill, Montana, USA
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