October weather forecast and climate
Hamilton, MT

A strong suspension bridge over a fast river in Hamilton, Montana, overlooking scenic trees and hilly landscapes over the other side of the shore
A strong suspension bridge over a fast river in Hamilton, Montana, overlooking scenic trees and hilly landscapes over the other side of the shore
October, like September, in Hamilton, Montana, is another fresh autumn month, with average temperature varying between 30.4°F (-0.9°C) and 50°F (10°C).

Temperature

In October, the average high-temperature significantly decreases, from a comfortable 66.2°F (19°C) in September, to a cool 50°F (10°C). In Hamilton, the average low-temperature is 30.4°F (-0.9°C).

Humidity

The average relative humidity in October is 69%.

Rainfall

In Hamilton, during October, the rain falls for 14.5 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, in Hamilton, Montana, there are 163.6 rainfall days, and 20.83" (529mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Hamilton. In Hamilton, during October, snow falls for 3.5 days and regularly aggregates up to 1.54" (39mm) of snow. Throughout the year, in Hamilton, there are 101.1 snowfall days, and 59.17" (1503mm) of snow is accumulated.

Daylight

The average length of the day in October is 10.9h.

Sunshine

The average sunshine in Hamilton is 7.3h.

UV index

In Hamilton, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in October in Hamilton?

In Hamilton, in October, the average high-temperature is 50°F (10°C), and the average low-temperature is 30.4°F (-0.9°C).

What is the average humidity in October in Hamilton?

In Hamilton, the average relative humidity in October is 69%.

How many days does it rain in October in Hamilton?

In Hamilton, in October, it is raining for 14.5 days, with typically 1.46" (37mm) of accumulated precipitation.

How many days does it snow in October in Hamilton?

In October, it is snowing for 3.5 days. Throughout October, 1.54" (39mm) of snow is accumulated.

What is the average length of the day in October in Hamilton?

In October, the average length of the day in Hamilton, Montana, is 10.9h.

How long on average sun shines in October in Hamilton?

The average sunshine in October is 7.3h.

What is the UV index reading in October in Hamilton?

In October, the average daily maximum UV index in Hamilton, Montana, is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in October - Hamilton, MT
  • Average high temperature in October: 10°C

The warmest month (with the highest average high temperature) is July (25°C).
The month with the lowest average high temperature is December (-2.9°C).

  • Average low temperature in October: -0.9°C

The month with the highest average low temperature is August (8.3°C).
The coldest month (with the lowest average low temperature) is December (-10°C).

Average pressure in October - Hamilton, MT
  • Average pressure in October: 1018.1mbar

The month with the highest atmospheric pressure is January (1023mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in October - Hamilton, MT
  • Average wind speed in October: 7.7km/h

The windiest month (with the highest average wind speed) is January (8.6km/h).
The calmest month (with the lowest average wind speed) is August (6.6km/h).

Average humidity in October - Hamilton, MT
  • Average humidity in October: 69%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).

Average rainfall in October - Hamilton, MT
  • Average rainfall in October: 37mm

The wettest months (with the highest rainfall) are February and April (60mm).
The driest month (with the least rainfall) is August (19mm).

Average rainfall days in October - Hamilton, MT
  • Average rainfall days in October: 14.5 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).

Average snowfall in October - Hamilton, MT
  • Average snowfall in October: 39mm

The month with the highest snowfall is February (331mm).
Months with the least snowfall are June, July and August (0mm).

Average snowfall days in October - Hamilton, MT
  • Average snowfall days in October: 3.5 days

The month with the highest number of snowfall days is February (19.3 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in October / Average sunshine in October - Hamilton, MT
  • Average daylight in October: 10.9h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in October: 7.3h

Months with the most sunshine are July and August (Average sunshine: 11.7h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

Average sunshine days in October - Hamilton, MT
  • Average sunshine days in October: 13.1 days

The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).

Average UV index in October - Hamilton, MT
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are February and December (UV index 1).

Average visibility in October - Hamilton, MT
  • Average visibility in October: 9km

Months with the highest visibility are July and August (10km).
Months with the lowest visibility are January, February, March and December (7km).