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

September weather forecast and climate
Ennis, MT

September, the first month of the autumn, in Ennis, is still a pleasant month, with average temperature ranging between max 72°F (22.2°C) and min 38.5°F (3.6°C).

Temperature

In Ennis, the average high-temperature decreases, from a warm 82.2°F (27.9°C) in August, to an agreeable 72°F (22.2°C). In September, the average low-temperature is 38.5°F (3.6°C).

Rainfall

During September, Ennis regularly aggregates up to 1" (24.6mm) of precipitation. Throughout the year, in Ennis, 13.3" (339mm) of rain is accumulated.

Snowfall

Months with snowfall in Ennis are January through June, September through December. September is the first month it typically snows in Ennis. Throughout September, Ennis receives 0.2" (5.1mm) of snow. Throughout the year, in Ennis, 41.7" (1059.2mm) of snow is accumulated.

Daylight

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

What is the temperature in September in Ennis?

In September, in Ennis, the average high-temperature is 72°F (22.2°C), and the average low-temperature is 38.5°F (3.6°C).

How much does it rain in Ennis in September?

In Ennis, Montana, in September, 1" (24.6mm) of precipitation is typically accumulated.

When does it start to snow in Ennis?

September is the first month it typically snows in Ennis, Montana. Throughout September, Ennis receives 0.2" (5.1mm) of snow.

How many hours of daylight does Ennis have in September?

In September, the average length of the day in Ennis is 12.5h.
Average temperature in September - Ennis, MT
  • Average high temperature in September: 72°F

The warmest month (with the highest average high temperature) is July (83.2°F).
The month with the lowest average high temperature is December (33.3°F).

  • Average low temperature in September: 38.5°F

The month with the highest average low temperature is July (48.1°F).
The coldest month (with the lowest average low temperature) is December (15.8°F).

Average rainfall in September - Ennis, MT
  • Average rainfall in September: 1"

The wettest month (with the highest rainfall) is June (2.4").
The driest month (with the lowest rainfall) is January (0.4").

Average snowfall in September - Ennis, MT
  • Average snowfall in September: 0.2"

The month with the highest snowfall is March (7.1").
Months with the lowest snowfall are July and August (0").

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

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).