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
The start of September signals a decrease in the average high-temperature, transitioning from a warm 77.5°F (25.3°C) in August to an enjoyable 65.3°F (18.5°C). Stryker's September nights represent a significant downturn from the day's heat, with an average temperature of 38.5°F (3.6°C).Humidity
In September, the average relative humidity is 64%.Rainfall
In September, the rain falls for 9 days. Throughout September, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 136.9 rainfall days, and 16.46" (418mm) of precipitation is accumulated.Snowfall
Months with snowfall in Stryker are January through May, September through December. September is the first month it typically snows in Stryker, Montana. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Stryker, during the entire year, snow falls for 107.6 days and aggregates up to 51.42" (1306mm) of snow.Daylight
The average length of the day in September in Stryker is 12h and 34min.On the first day of September in Stryker, Montana, sunrise is at 6:57 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:19 pm MDT.
Sunshine
The average sunshine in September in Stryker is 9.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Be vigilant - Preventing sunburn is recommended. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What is the average September temperature in Stryker?
What is the average humidity in September in Stryker?
How much does it rain in Stryker in September?
When does it start to snow in Stryker?
How many hours of daylight does Stryker have in September?
When is the sunrise / sunset in September in Stryker?
How many hours of sunshine does Stryker have in September?
What is the UV index reading in September in Stryker?
Average temperature in September
Stryker, MT
- Average high temperature in September: 65.3°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is December (25.5°F).
- Average low temperature in September: 38.5°F
The month with the highest average low temperature is August (45°F).
The coldest month (with the lowest average low temperature) is February (12.7°F).
Average pressure in September
Stryker, 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
Stryker, MT
- Average wind speed in September: 3.7mph
The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in September
Stryker, MT
- Average humidity in September: 64%
The month with the highest relative humidity is January (94%).
The months with the lowest relative humidity are July and August (56%).
Average rainfall in September
Stryker, MT
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is March (1.93").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in September
Stryker, MT
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in September
Stryker, MT
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (11.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Stryker, MT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (21.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Stryker, 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 months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Stryker, MT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (6.3 days).
Average UV index in September
Stryker, 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
Stryker, MT
- Average cloud cover in September: 25
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Stryker, MT
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Stryker, Montana, USA
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