Montana, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Terry, MT

September, the first month of the autumn, in Terry, is still a warm month, with average temperature ranging between max 75.9°F (24.4°C) and min 43°F (6.1°C).


In September, the average high-temperature decreases, from a hot 88°F (31.1°C) in August, to a moderately hot 75.9°F (24.4°C). The average low-temperature, in Terry, is 43°F (6.1°C).


During September, Terry regularly aggregates up to 1.3" (32.5mm) of precipitation. During the entire year, Terry aggregates up to 11.9" (301.1mm) of precipitation.


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

What is the temperature in September in Terry?

In Terry, in September, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 43°F (6.1°C).

How much does it rain in Terry in September?

Throughout September, 1.3" (32.5mm) of precipitation is accumulated.

How many hours of daylight does Terry have in September?

The average length of the day in September in Terry is 12.5h.
Average temperature in September - Terry, MT
  • Average high temperature in September: 76°F

The warmest month (with the highest average high temperature) is July (89°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in September: 43°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (2°F).

Average rainfall in September - Terry, MT
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is June (2.2").
Driest months (with the lowest rainfall) are February and December (0.2").

Average daylight in September - Terry, MT
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).