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 from August to September is accompanied by a temperature drop, with average high-temperatures decreasing from a moderately hot 76.8°F (24.9°C) to an enjoyable 65.5°F (18.6°C). Red Rock Point demonstrates a significant disparity from daytime highs throughout the month of September, with an average nighttime temperature of 39.2°F (4°C).Humidity
In September, the average relative humidity is 64%.Rainfall
In Red Rock Point, in September, during 8.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 126.4 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Red Rock Point, Montana. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Red Rock Point, Montana, during the entire year, snow falls for 97 days and aggregates up to 33.86" (860mm) of snow.Daylight
The average length of the day in September in Red Rock Point is 12h and 34min.On the first day of the month, sunrise is at 6:53 am and sunset at 8:16 pm. On the last day of September, sunrise is at 7:34 am and sunset at 7:15 pm MDT.
Sunshine
In Red Rock Point, the average sunshine in September is 9.4h.UV index
In Red Rock Point, Montana, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the average September temperature in Red Rock Point?
What is the average humidity in September in Red Rock Point?
How many days does it rain in September in Red Rock Point?
When does it start to snow in Red Rock Point?
What is the average length of the day in September in Red Rock Point?
When is the sunrise / sunset in September in Red Rock Point?
How many hours of sunshine does Red Rock Point have in September?
What is the UV index intensity in September in Red Rock Point?
Average temperature in September
Red Rock Point, MT
- Average high temperature in September: 65.5°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in September: 39.2°F
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in September
Red Rock Point, MT
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Red Rock Point, MT
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity in September
Red Rock Point, MT
- Average humidity in September: 64%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Red Rock Point, MT
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in September
Red Rock Point, MT
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in September
Red Rock Point, MT
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Red Rock Point, MT
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Red Rock Point, 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 24min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Red Rock Point, MT
- Average sunshine days in September: 19 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in September
Red Rock Point, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Red Rock Point, MT
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in September
Red Rock Point, MT
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Red Rock Point, Montana, USA
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