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 ushers in a minor alteration in Lyman's climate, with the average high-temperature moving from August's moderately hot 74.3°F (23.5°C) to an enjoyable 67.6°F (19.8°C). During September, Lyman sees a mean low-temperature of 47.1°F (8.4°C).Humidity
The average relative humidity in September is 42%.Rainfall
In Lyman, Utah, in September, it is raining for 8.4 days, with typically 0.59" (15mm) of accumulated precipitation. In Lyman, during the entire year, the rain falls for 71.2 days and collects up to 9.84" (250mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Lyman, Utah. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.16" (4mm) of snow. In Lyman, during the entire year, snow falls for 64.4 days and aggregates up to 44.17" (1122mm) of snow.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:10 pm MDT.
Sunshine
In September, the average sunshine in Lyman is 9.9h.UV index
The average daily maximum UV index in September in Lyman, Utah, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Undertake protective steps - Preventing sun damage is advised. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What are September temperatures in Lyman?
What is the average humidity in September in Lyman?
How much does it rain in Lyman in September?
When does it start snowing in Lyman?
What is the average length of the day in September in Lyman?
What time are sunrise and sunset in September in Lyman?
How long on average sun shines in September in Lyman?
How high is the UV index in September in Lyman?
Average temperature in September
Lyman, UT
- Average high temperature in September: 67.6°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Lyman, UT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Lyman, UT
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in September
Lyman, UT
- Average humidity in September: 42%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is June (32%).
Average rainfall in September
Lyman, UT
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.26").
The driest month (with the least rainfall) is June (0.43").
Average rainfall days in September
Lyman, UT
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is November (1.7 days).
Average snowfall in September
Lyman, UT
- Average snowfall in September: 0.16"
The month with the highest snowfall is March (8.07").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Lyman, UT
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (11.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Lyman, UT
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Lyman, UT
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Lyman, UT
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Lyman, UT
- Average cloud cover in September: 12
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 12).
Average visibility in September
Lyman, UT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Lyman, Utah, USA
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