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's arrival comes with a decrease in the average high-temperature, moving from a warm 76.8°F (24.9°C) in August to a comfortable 66.7°F (19.3°C). Marked by a significant temperature drop from daytime highs, the average nighttime temperature in Leonard Place lowers to a cold 41.9°F (5.5°C) throughout September.Humidity
In September, the average relative humidity is 50%.Rainfall
In September, in Leonard Place, the rain falls for 8.4 days. Throughout September, 0.67" (17mm) of precipitation is accumulated. In Leonard Place, during the entire year, the rain falls for 111 days and collects up to 9.25" (235mm) of precipitation.Snowfall
Months with snowfall in Leonard Place are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.8 snowfall days, it receives 1.18" (30mm) of snow. Throughout the year, there are 73.8 snowfall days, and 27.52" (699mm) of snow is accumulated.Daylight
The average length of the day in September in Leonard Place, Montana, is 12h and 31min.On the first day of September, sunrise is at 6:51 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:09 pm MDT.
Sunshine
In Leonard Place, the average sunshine in September is 9.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Leonard Place?
What is the average humidity in September in Leonard Place?
How much does it rain in Leonard Place in September?
When does it start to snow in Leonard Place?
How many hours of daylight does Leonard Place have in September?
When is the sunrise / sunset in September in Leonard Place?
How many hours of sunshine does Leonard Place have in September?
What is the UV index reading in September in Leonard Place?
Average temperature in September
Leonard Place, MT
- Average high temperature in September: 66.7°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is December (10.6°F).
Average pressure in September
Leonard 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
Leonard Place, MT
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is November (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Leonard Place, MT
- Average humidity in September: 50%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in September
Leonard Place, MT
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is June (1.34").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Leonard Place, MT
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is May (13.9 days).
The months with the least rainy days are November and December (6.2 days).
Average snowfall in September
Leonard Place, MT
- Average snowfall in September: 1.18"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Leonard Place, MT
- Average snowfall days in September: 0.8 days
The month with the highest number of snowfall days is February (13.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Leonard Place, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Leonard Place, MT
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is July (18.7 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in September
Leonard Place, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Leonard Place, MT
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in September
Leonard Place, MT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Leonard Place, Montana, USA
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