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 transition into September is accompanied by a temperature decrease, with the average high-temperature shifting from a warm 82.2°F (27.9°C) in August to an agreeable 72.7°F (22.6°C). An average temperature of 54.1°F (12.3°C) marks the nights in September.Humidity
The average relative humidity in September is 47%.Rainfall
In September, the rain falls for 6.6 days. Throughout September, 0.47" (12mm) of precipitation is accumulated. In Fossil, during the entire year, the rain falls for 131.9 days and collects up to 13.54" (344mm) of precipitation.Snowfall
Months with snowfall in Fossil are January through May, September through December. September is the first month it typically snows in Fossil. Throughout September, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow. In Fossil, Oregon, during the entire year, snow falls for 31.3 days and aggregates up to 18.54" (471mm) of snow.Daylight
In Fossil, Oregon, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:37 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:42 pm PDT.
Sunshine
In Fossil, Oregon, the average sunshine in September is 10.8h.UV index
The average daily maximum UV index in September in Fossil is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What are September temperatures in Fossil?
What is the average humidity in September in Fossil?
How much does it rain in Fossil in September?
When does it start snowing in Fossil?
How many hours of daylight does Fossil have in September?
When are sunrise and sunset in September in Fossil?
How long on average sun shines in September in Fossil?
How high is the UV index in September in Fossil?
Average temperature in September
Fossil, OR
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (37.9°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).
Average pressure in September
Fossil, OR
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in September
Fossil, OR
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is September (7.2mph).
Average humidity in September
Fossil, OR
- Average humidity in September: 47%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall in September
Fossil, OR
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Fossil, OR
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is March (17 days).
The month with the least rainy days is August (4.1 days).
Average snowfall in September
Fossil, OR
- Average snowfall in September: 0.24"
The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Fossil, OR
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Fossil, OR
- 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: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 5h and 18min).
Average sunshine days in September
Fossil, OR
- Average sunshine days in September: 21.2 days
The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (9.5 days).
Average UV index in September
Fossil, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Fossil, OR
- Average cloud cover in September: 16
The months with the most cloud cover are January and February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Fossil, OR
- 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).
Fossil, Oregon, USA
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