October weather forecastEureka, MT
October
Weather in October
October is typified by its genuinely autumnal conditions, including a further reduction in temperatures and shorter days. The weather continues its rainy pattern from September, however, at a slightly reduced rate. During this month, you'll notice that the hours of daylight fall to 10.8 hours, emphasizing the changing seasons. A significant shift is the reintroduction of snowfall after a virtual absence since May. October in Eureka immerses individuals in the beauty of Fall with its spectacular color-changes and nip in the air.Temperature
The transition from September to October brings a clear temperature drop, with average high-temperatures decreasing from a refreshing 65.8°F (18.8°C) to a frosty 49.1°F (9.5°C). Throughout the month of October, Eureka witnesses an average low-temperature of 30.6°F (-0.8°C).Humidity
The average relative humidity in October in Eureka is 77%.Rainfall
In October, the rain falls for 12.8 days. Throughout October, 1.18" (30mm) of precipitation is accumulated. In Eureka, during the entire year, the rain falls for 136.3 days and collects up to 15.35" (390mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Eureka, Montana. In October, in Eureka, it is snowing for 3.7 days. Throughout October, 1.26" (32mm) of snow is accumulated. In Eureka, during the entire year, snow falls for 110.7 days and aggregates up to 46.81" (1189mm) of snow.Daylight
In October, the average length of the day in Eureka is 10h and 46min.On the first day of October in Eureka, sunrise is at 7:41 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 8:26 am and sunset at 6:20 pm MDT.
Sunshine
The average sunshine in October is 6.4h.UV index
The average daily maximum UV index in October in Eureka is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 2 in October interprets into the following advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Eureka, MT
- Average high temperature in October: 49.1°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is December (25.5°F).
- Average low temperature in October: 30.6°F
The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in October
Eureka, MT
- Average pressure in October: 30.05"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Eureka, MT
- Average wind speed in October: 3.7mph
The windiest month (with the highest average wind speed) is June (4.4mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).
Average humidity in October
Eureka, MT
- Average humidity in October: 77%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).
Average rainfall in October
Eureka, MT
- Average rainfall in October: 1.18"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in October
Eureka, MT
- Average rainfall days in October: 12.8 days
The month with the highest number of rainy days is April (17 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in October
Eureka, MT
- Average snowfall in October: 1.26"
The month with the highest snowfall is February (10").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Eureka, MT
- Average snowfall days in October: 3.7 days
The month with the highest number of snowfall days is December (22.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Eureka, MT
- Average daylight in October: 10h and 48min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in October: 6h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in October
Eureka, MT
- Average sunshine days in October: 14.8 days
The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (6.3 days).
Average UV index in October
Eureka, MT
- Average UV index in October: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in October
Eureka, MT
- Average cloud cover in October: 41
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in October
Eureka, MT
- Average visibility in October: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
