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 moderately hot 82.8°F (28.2°C) in August to a pleasant 72.5°F (22.5°C). Smithfield anticipates a considerable cooling off from the daytime high to an average minimum temperature of 48°F (8.9°C) in September.Humidity
The average relative humidity in September in Smithfield is 45%.Rainfall
In September, in Smithfield, the rain falls for 8.9 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. In Smithfield, Utah, during the entire year, the rain falls for 135.6 days and collects up to 18.54" (471mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Smithfield, Utah. Throughout September, in the average 0.1 snowfall days, it receives 0.39" (10mm) of snow. In Smithfield, Utah, during the entire year, snow falls for 78.7 days and aggregates up to 56.69" (1440mm) of snow.Daylight
In Smithfield, Utah, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:53 am and sunset at 8:00 pm. On the last day of September, in Smithfield, Utah, sunrise is at 7:24 am and sunset at 7:10 pm MDT.
Sunshine
In Smithfield, Utah, the average sunshine in September is 10h.UV index
In Smithfield, 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 the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What are September temperatures in Smithfield?
What is the average humidity in September in Smithfield?
How much does it rain in Smithfield in September?
When does it start snowing in Smithfield?
What is the average length of the day in September in Smithfield?
What time are sunrise and sunset in September in Smithfield?
How many hours of sunshine does Smithfield have in September?
What is the UV index intensity in September in Smithfield?
Average temperature in September
Smithfield, UT
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (29.3°F).
- Average low temperature in September: 48°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in September
Smithfield, UT
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Smithfield, UT
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in September
Smithfield, UT
- Average humidity in September: 45%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Smithfield, UT
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is January (2.2").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in September
Smithfield, UT
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is July (7.5 days).
Average snowfall in September
Smithfield, UT
- Average snowfall in September: 0.39"
The month with the highest snowfall is January (16.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Smithfield, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Smithfield, UT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Smithfield, UT
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in September
Smithfield, UT
- 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 and December (UV index 1).
Average cloud cover in September
Smithfield, UT
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Smithfield, UT
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Smithfield, Utah, USA
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