Grand Island (NE) monthly weather averages

Average daytime temperature

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

Grand Island average temperature chart (Celsius) Grand Island average temperature chart (Fahrenheit)
Average monthly temperatures in Grand Island (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.3 3.5 9.3 17.1 22.6 28.2 31 29.4 24.2 18.3 9.2 1.9
°F 32.5 38.3 48.7 62.8 72.7 82.8 87.9 85 75.6 64.9 48.6 35.4

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.

Grand Island monthly rainfall chart (mm) Grand Island monthly rainfall chart (inches)
Average monthly rainfall in Grand Island (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 12 18 47 63 103 99 78 74 70 35 25 18
inches 0.5 0.7 1.8 2.5 4.1 3.9 3.1 2.9 2.8 1.4 1 0.7
Rainy days 5 6 8 9 11 9 9 8 8 5 5 5

Average annual rainfall in Grand Island: 584.7mm (230.2 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Grand Island

Grand Island average daily sunshine chart
Average daily sunshine Grand Island
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.8 7.5 8.4 9.8 10.3 11.9 12.5 11 9.5 8.2 6.3 6.1

Day / night temperatures

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

Grand Island average minimum / maximum temperatures (Celsius) Grand Island average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Grand Island (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12 -9 -3.4 3.4 9.7 15.1 18.1 16.5 10.9 4 -3.3 -10
Max °C 0.6 3.8 9.6 17.5 22.9 28.6 31.4 29.8 24.6 18.7 9.5 2.2
Min °F 10.4 15.8 25.9 38 49.5 59.1 64.5 61.6 51.5 39.1 26.1 14.1
Max °F 21.7 27.3 37.6 50.7 61.3 71.2 76.5 73.6 63.9 52.3 37.6 25

Sea temperature

The graph below shows the average sea temperature.

Grand Island average sea temperature chart (Celsius) Grand Island average sea temperature chart (Fahrenheit)
Average sea temperature around Grand Island in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10.1 9.8 10.2 11.3 13 15.2 17.6 19.8 18.8 15.8 13 11.1
°F 50.1 49.7 50.4 52.3 55.4 59.3 63.6 67.7 65.8 60.4 55.4 52

Wind speed

The graph below shows the average wind speed.

Grand Island average winspeed by month (km/h) Grand Island average winspeed by month (mph)
Average wind speed in Grand Island (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 20 20 23 23 21 20 18 18 18 19 19 19
mph 13 13 14 15 13 12 11 11 11 12 12 12

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.

Grand Island relative humidity averages
Average relative humidity in Grand Island
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
69% 70% 66% 61% 64% 63% 64% 67% 67% 63% 69% 71%

Other monthly averages

UV index Best time to go?

Grand Island weather stats

Grand Island weather statistics
Hottest month: July 31°C 87.8°F
Driest month: January 12mm 0.5ins
Sunniest month: July 12.5hrs
Coldest month: January 0.3°C 32.5°F
Wettest month: May 103mm 4.1ins
Warmest sea: August 19.8°C 67.6°F
Map showing location of Grand Island (40.92501, -98.34201) Grand Island map pin © Google

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