Lansing
Michigan, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Lansing, MI

The Capitol building in Lansing, Michigan, hosting the legislative arm of the US government
The Capitol building in Lansing, Michigan, hosting the legislative arm of the US government
The first month of the autumn, September, is also an agreeable month in Lansing, Michigan, with average temperature fluctuating between 71.4°F (21.9°C) and 52.7°F (11.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 77.7°F (25.4°C) in August, to an agreeable 71.4°F (21.9°C). In September, the average low-temperature is 52.7°F (11.5°C).

Humidity

In September, the average relative humidity is 79%.

Rainfall

In September, the rain falls for 11.8 days. Throughout September, 1.54" (39mm) of precipitation is accumulated. In Lansing, during the entire year, the rain falls for 144.6 days and collects up to 24.09" (612mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Lansing, the average length of the day in September is 12.5h.

Sunshine

In September, the average sunshine is 8h.

UV index

In Lansing, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 3 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Lansing?

In Lansing, in September, the average high-temperature is 71.4°F (21.9°C), and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in September in Lansing?

The average relative humidity in September in Lansing, Michigan, is 79%.

How many days does it rain in September in Lansing?

In Lansing, Michigan, in September, it is raining for 11.8 days, with typically 1.54" (39mm) of accumulated precipitation.

Does it snow in Lansing in September?

In Lansing, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Lansing?

In Lansing, Michigan, snow does not fall in June through September.

What is the average length of the day in September in Lansing?

In Lansing, Michigan, the average length of the day in September is 12.5h.

How many hours of sunshine does Lansing have in September?

In Lansing, Michigan, the average sunshine in September is 8h.

What is the UV index reading in September in Lansing?

In Lansing, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Lansing, MI
  • Average high temperature in September: 21.9°C

The warmest month (with the highest average high temperature) is July (26.3°C).
The month with the lowest average high temperature is January (-2.7°C).

  • Average low temperature in September: 11.5°C

The month with the highest average low temperature is July (16°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).

Average humidity in September - Lansing, MI
  • Average humidity in September: 79%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (77%).

Average rainfall in September - Lansing, MI
  • Average rainfall in September: 39mm

The wettest month (with the highest rainfall) is May (80mm).
The driest month (with the lowest rainfall) is February (35mm).

Average rainfall days in September - Lansing, MI
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (17.2 days).
The month with the lowest number of rainy days is February (5.7 days).

Average snowfall in September - Lansing, MI
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (110mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in September - Lansing, MI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (16.2 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Lansing, MI
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 8h

The month with most sunshine is July (Average sunshine: 10.3h).
The month with least sunshine is January (Average sunshine: 2.7h).

Average UV index in September - Lansing, MI
  • Average UV index in September: 3

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January and December (UV index 1).