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
A mild drop in Hartland's average high-temperature is observed in September, transitioning from a warm 77.9°F (25.5°C) in August to an agreeable 71.2°F (21.8°C). The mean low-temperature during September nights is a cool 53.6°F (12°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Hartland, during September, the rain falls for 14.5 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Hartland, during the entire year, the rain falls for 151 days and collects up to 26.57" (675mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Hartland, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 7:00 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:17 pm EDT.
Sunshine
In Hartland, the average sunshine in September is 8h.UV index
In Hartland, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in Hartland in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Hartland, MI
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Hartland, MI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Hartland, MI
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Hartland, MI
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Hartland, MI
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (3.27").
The driest months (with the least rainfall) are February and December (1.46").
Average rainfall days in September
Hartland, MI
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (5 days).
Average snowfall in September
Hartland, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hartland, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hartland, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Hartland, MI
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in September
Hartland, MI
- Average UV index in September: 3
The month with the highest UV index is August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Hartland, MI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Hartland, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Hartland, Michigan, USA
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