Rolla (ND) monthly weather averages

Contents

Average daytime temperature

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

Rolla average temperature chart (Celsius) Rolla average temperature chart (Fahrenheit)
Average monthly temperatures in Rolla (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -10.4 -7.2 -0.7 10.3 18.3 22.8 25.9 24.9 18.2 11.1 0.1 -8.6
°F 13.3 19.1 30.7 50.5 64.9 73.1 78.6 76.9 64.8 52 32.1 16.5

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.

Rolla monthly rainfall chart (mm) Rolla monthly rainfall chart (inches)
Average monthly rainfall in Rolla (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 23 19 27 39 56 93 68 73 51 34 20 21
inches 0.9 0.8 1.1 1.5 2.2 3.7 2.7 2.9 2 1.4 0.8 0.8
Rainy days 7 6 6 6 8 11 9 8 8 5 5 7

Average annual rainfall in Rolla: 473.834mm (186.5 inches)

Average daily sunshine

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

Rolla average daily sunshine chart
Average daily sunshine Rolla
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.5 5.2 6.1 7.6 9.2 9.7 11.1 9.9 7.1 5.9 3.8 3.7

Day / night temperatures

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

Rolla average minimum / maximum temperatures (Celsius) Rolla average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rolla (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -21.5 -18.3 -11.2 -2.4 4.2 9.5 12 10.5 4.9 -1 -9.7 -18.7
Max °C -10.1 -6.9 -0.5 10.6 18.7 23.2 26.3 25.3 18.6 11.4 0.3 -8.4
Min °F -6.7 -0.9 11.9 27.7 39.5 49 53.5 50.9 40.7 30.2 14.5 -1.6
Max °F 3.6 9.3 21.6 39.4 52.5 61.3 66.4 64.2 53.1 41.4 23.5 7.7

Sea temperature

The graph below shows the average sea temperature.

Rolla average sea temperature chart (Celsius) Rolla average sea temperature chart (Fahrenheit)
Average sea temperature around Rolla in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.3 5.2 5.4 6.1 7.3 9.2 11.8 14.8 13.7 10.5 7.7 6
°F 41.5 41.3 41.8 43 45.1 48.5 53.2 58.6 56.7 50.9 45.8 42.7

Wind speed

The graph below shows the average wind speed.

Rolla average winspeed by month (km/h) Rolla average winspeed by month (mph)
Average wind speed in Rolla (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 17 18 19 19 17 15 15 17 18 17 17
mph 11 11 11 12 12 11 9 9 11 11 11 11

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.

Rolla relative humidity averages
Average relative humidity in Rolla
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
75% 76% 76% 66% 60% 65% 68% 67% 69% 70% 76% 78%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Rolla weather stats

Rolla weather statistics
Hottest month: July 25.9°C 78.6°F
Driest month: February 19mm 0.7ins
Sunniest month: July 11.1hrs
Coldest month: January -10.4°C 13.3°F
Wettest month: June 93mm 3.7ins
Warmest sea: August 14.8°C 58.6°F
Map showing location of Rolla (48.85778, -99.61792) Rolla map pin © Google

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