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 onset of September entails a subtle temperature shift, as the average high-temperature eases from a warm 77.5°F (25.3°C) in August to a pleasant 72°F (22.2°C). Hillsdale experiences a nighttime temperature average of 53.8°F (12.1°C) during September.Humidity
The average relative humidity in September is 80%.Rainfall
In Hillsdale, during September, the rain falls for 13.8 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Hillsdale, during the entire year, the rain falls for 145.8 days and collects up to 24.02" (610mm) of precipitation.Snowfall
June through September are months without snowfall in Hillsdale.Daylight
In Hillsdale, Michigan, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 7:05 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hillsdale in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Hillsdale?
What is the UV index reading in September?
Average temperature in September
Hillsdale, MI
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Hillsdale, MI
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Hillsdale, MI
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Hillsdale, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (77%).
Average rainfall in September
Hillsdale, MI
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (1.22").
Average rainfall days in September
Hillsdale, MI
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in September
Hillsdale, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hillsdale, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hillsdale, MI
- 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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Hillsdale, MI
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in September
Hillsdale, MI
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Hillsdale, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Hillsdale, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Hillsdale, Michigan, USA
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