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

September weather forecast and climate
Eureka, MT

September, the first month of the autumn, in Eureka, is still a pleasant month, with average temperature varying between 41°F (5°C) and 73°F (22.8°C).

Temperature

In Eureka, the average high-temperature in September decreases, from a moderately hot 84°F (28.9°C) in August, to a pleasant 73°F (22.8°C). In September, the average low-temperature is 41°F (5°C).

Rainfall

Throughout September, 1.1" (26.9mm) of precipitation is accumulated. During the entire year, Eureka aggregates up to 14.8" (376.1mm) of precipitation.

Daylight

In Eureka, the average length of the day is 12.6h.

Sunshine

In Eureka, the average sunshine in September is 7.5h.

What is the temperature in September in Eureka?

The average high-temperature, in September, is 73°F (22.8°C), while the average low-temperature is 41°F (5°C).

How much does it rain in Eureka in September?

In Eureka, Montana, in September, 1.1" (26.9mm) of precipitation is typically accumulated.

How many hours of daylight does Eureka have in September?

In September, the average length of the day in Eureka is 12.6h.

How many hours of sunshine does Eureka have in September?

In September, the average sunshine in Eureka, Montana, is 7.5h.
Average temperature in September - Eureka, MT
  • Average high temperature in September: 73°F

Warmest months (with the highest average high temperature) are July and August (84°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in September: 41°F

The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (15°F).

Average rainfall in September - Eureka, MT
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is June (2.1").
Driest months (with the lowest rainfall) are February and March (0.8").

Average daylight in September / Average sunshine in September - Eureka, MT
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.1h).
The month with shortest days is December (Average daylight: 8.3h).

  • Average sunshine in September: 7.5h

The month with most sunshine is July (Average sunshine: 12h).
The month with least sunshine is December (Average sunshine: 1.3h).