The bar chart below shows the average monthly peak daytime temperatures at Rapid City
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 1.2 | 3.4 | 7.4 | 13.8 | 19.3 | 25.1 | 29.5 | 28.6 | 22.7 | 16.7 | 7.9 | 2.5 |
°F | 34.2 | 38.2 | 45.4 | 56.9 | 66.8 | 77.1 | 85.2 | 83.5 | 72.9 | 62.1 | 46.2 | 36.5 |
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.
The graph below shows the average rainfall and number of rainy days per month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm | 8 | 12 | 24 | 50 | 80 | 79 | 62 | 48 | 30 | 26 | 12 | 11 |
inches | 0.3 | 0.5 | 0.9 | 2 | 3.1 | 3.1 | 2.4 | 1.9 | 1.2 | 1 | 0.5 | 0.4 |
Rainy days | 7 | 7 | 9 | 10 | 12 | 12 | 9 | 8 | 7 | 5 | 6 | 7 |
Average annual rainfall in Rapid City: 382.133mm (150.4 inches)
The bar chart below shows the average daily sunshine hours in Rapid City
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 5.9 | 6.9 | 8.1 | 8.8 | 9.5 | 11.1 | 11.6 | 11.2 | 9.4 | 7.9 | 5.8 | 5.5 |
The graph below shows the daily range of temperatures for each month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Min °C | -12.2 | -10 | -6 | -0.2 | 5.8 | 11 | 14.7 | 13 | 7.1 | 1.5 | -5.4 | -10.6 |
Max °C | 1.6 | 3.8 | 7.8 | 14.2 | 19.7 | 25.4 | 29.9 | 29 | 23.1 | 17.1 | 8.2 | 2.8 |
Min °F | 10.1 | 14.1 | 21.3 | 31.7 | 42.4 | 51.8 | 58.5 | 55.4 | 44.8 | 34.7 | 22.3 | 12.9 |
Max °F | 22.5 | 26.4 | 33.6 | 44.6 | 54.9 | 64.8 | 72.1 | 69.8 | 59.2 | 48.7 | 34.5 | 25 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 8 | 7.9 | 8.1 | 8.9 | 10.1 | 12 | 14.3 | 16.6 | 15.7 | 13 | 10.5 | 8.8 |
°F | 46.5 | 46.1 | 46.7 | 48 | 50.2 | 53.6 | 57.8 | 61.8 | 60.3 | 55.4 | 50.9 | 47.8 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 19 | 19 | 21 | 22 | 21 | 18 | 17 | 17 | 18 | 18 | 18 | 18 |
mph | 12 | 12 | 13 | 14 | 13 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
64% | 65% | 64% | 59% | 61% | 61% | 56% | 53% | 54% | 55% | 63% | 65% |
Hottest month: | July | 29.5°C 85.1°F |
---|---|---|
Driest month: | January | 8mm 0.3ins |
Sunniest month: | August | 11.2hrs |
Coldest month: | January | 1.2°C 34.2°F |
Wettest month: | May | 80mm 3.1ins |
Warmest sea: | August | 16.6°C 61.9°F |