Altamont (OR) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Altamont

Altamont average temperature chart (Celsius) Altamont average temperature chart (Fahrenheit)
Average monthly temperatures in Altamont (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.4 6.5 9 13 18.3 23.2 28 27.4 23.2 16.8 7.8 3.7
°F 38.1 43.7 48.3 55.4 64.9 73.8 82.4 81.3 73.8 62.2 46.1 38.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Altamont monthly rainfall chart (mm) Altamont monthly rainfall chart (inches)
Average monthly rainfall in Altamont (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 65 45 48 27 27 22 8 16 17 35 64 74
inches 2.6 1.8 1.9 1.1 1.1 0.9 0.3 0.6 0.7 1.4 2.5 2.9
Rainy days 12 11 12 10 7 6 3 4 5 7 13 13

Average annual rainfall in Altamont: 368.6mm (145.1 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Altamont

Altamont average daily sunshine chart
Average daily sunshine Altamont
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.3 5.7 7.6 9.3 11.3 12.8 14.1 12.9 11.2 8.1 4.3 3.7

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Altamont average minimum / maximum temperatures (Celsius) Altamont average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Altamont (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -7.3 -4.8 -3.4 -1.8 2.2 6 8.8 8.2 4.6 0.2 -3.3 -6.5
Max °C 3.7 6.8 9.4 13.4 18.7 23.7 28.5 27.9 23.7 17.2 8.1 3.9
Min °F 19 23.4 26 28.9 35.9 42.7 47.8 46.7 40.2 32.4 26.1 20.3
Max °F 28.8 33.8 37.4 42.4 50.7 58.6 65.5 64.4 57.4 47.7 36.3 29.7

Sea temperature

The graph below shows the average sea temperature.

Altamont average sea temperature chart (Celsius) Altamont average sea temperature chart (Fahrenheit)
Average sea temperature around Altamont in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10.2 10.1 10.1 10.2 10.8 11.9 13.3 14 14 13 11.8 10.7
°F 50.4 50.2 50.2 50.4 51.5 53.5 55.9 57.3 57.1 55.4 53.2 51.2

Wind speed

The graph below shows the average wind speed.

Altamont average winspeed by month (km/h) Altamont average winspeed by month (mph)
Average wind speed in Altamont (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 11 13 13 13 13 13 12 11 10 10 10
mph 6 7 8 8 8 8 8 7 7 6 6 6

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Altamont relative humidity averages
Average relative humidity in Altamont
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
79% 73% 65% 60% 56% 52% 47% 48% 55% 65% 78% 81%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Altamont weather stats

Altamont weather statistics
Hottest month: July 28°C 82.4°F
Driest month: July 8mm 0.3ins
Sunniest month: July 14.1hrs
Coldest month: January 3.4°C 38.1°F
Wettest month: December 74mm 2.9ins
Warmest sea: August 14°C 57.2°F
Map showing location of Altamont (42.20681, -121.73722) Altamont map pin © Google

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