Williamsport (IN) monthly weather averages

Average daytime temperature

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

Williamsport average temperature chart (Celsius) Williamsport average temperature chart (Fahrenheit)
Average monthly temperatures in Williamsport (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.4 3 10 17.2 23.2 28.3 29.7 28.4 25.4 18.6 10.8 3
°F 32.7 37.3 50 62.9 73.7 82.9 85.5 83.2 77.7 65.5 51.4 37.4

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.

Williamsport monthly rainfall chart (mm) Williamsport monthly rainfall chart (inches)
Average monthly rainfall in Williamsport (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 53 48 78 102 107 105 103 100 79 70 81 75
inches 2.1 1.9 3.1 4 4.2 4.1 4 3.9 3.1 2.8 3.2 3
Rainy days 11 10 13 12 11 9 10 9 8 9 10 12

Average annual rainfall in Williamsport: 953.3mm (375.3 inches)

Average daily sunshine

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

Williamsport average daily sunshine chart
Average daily sunshine Williamsport
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5 5.7 6.5 7.9 9.6 10.9 10.8 9.9 8.6 7.1 4.5 3.9

Day / night temperatures

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

Williamsport average minimum / maximum temperatures (Celsius) Williamsport average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Williamsport (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -9 -7 -0.9 4.5 9.9 15.2 17.4 16.1 11.9 5.5 0.6 -5.6
Max °C 0.6 3.2 10.3 17.5 23.5 28.6 30 28.8 25.7 19 11.1 3.2
Min °F 15.8 19.4 30.5 40.1 49.8 59.4 63.3 60.9 53.4 41.8 33 21.9
Max °F 24.4 28.6 40.5 51.8 62.1 71.4 74.7 72.3 65.8 54 42.4 29.8

Sea temperature

The graph below shows the average sea temperature.

Williamsport average sea temperature chart (Celsius) Williamsport average sea temperature chart (Fahrenheit)
Average sea temperature around Williamsport in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.5 5.8 5.8 7 9.4 14.3 19.9 22.4 20.5 15.5 11.1 8.1
°F 43.7 42.4 42.5 44.5 49 57.7 67.8 72.3 68.9 59.9 52 46.6

Wind speed

The graph below shows the average wind speed.

Williamsport average winspeed by month (km/h) Williamsport average winspeed by month (mph)
Average wind speed in Williamsport (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 18 20 19 17 15 13 13 14 16 18 18
mph 12 11 12 12 10 9 8 8 9 10 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.

Williamsport relative humidity averages
Average relative humidity in Williamsport
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
74% 74% 70% 66% 66% 67% 71% 74% 73% 71% 75% 78%

Other monthly averages

UV index Best time to go?

Williamsport weather stats

Williamsport weather statistics
Hottest month: July 29.7°C 85.5°F
Driest month: February 48mm 1.9ins
Sunniest month: July 10.8hrs
Coldest month: January 0.4°C 32.7°F
Wettest month: May 107mm 4.2ins
Warmest sea: August 22.4°C 72.3°F
Map showing location of Williamsport (40.28837, -87.2939) Williamsport map pin © Google

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