Saint Peters (MO) monthly weather averages

Contents

Average daytime temperature

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

Saint Peters average temperature chart (Celsius) Saint Peters average temperature chart (Fahrenheit)
Average monthly temperatures in Saint Peters (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.9 5.5 12.2 19 24 28.9 31.4 30.3 26.3 20.1 12.4 5.1
°F 37.1 41.9 53.9 66.2 75.2 84.1 88.5 86.6 79.3 68.1 54.2 41.2

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.

Saint Peters monthly rainfall chart (mm) Saint Peters monthly rainfall chart (inches)
Average monthly rainfall in Saint Peters (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 43 50 84 95 105 94 93 77 85 69 78 68
inches 1.7 2 3.3 3.8 4.1 3.7 3.6 3 3.3 2.7 3.1 2.7
Rainy days 8 8 11 11 11 9 8 8 8 9 9 10

Average annual rainfall in Saint Peters: 889.067mm (350 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Saint Peters

Saint Peters average daily sunshine chart
Average daily sunshine Saint Peters
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.7 6.1 6.9 8 9.2 10.5 10.7 9.5 8.5 7.4 5.2 4.7

Day / night temperatures

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

Saint Peters average minimum / maximum temperatures (Celsius) Saint Peters average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Saint Peters (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -7.1 -4.8 1.2 7.5 12.5 17.8 20.4 19 14.9 8.3 2.2 -4.2
Max °C 3.1 5.8 12.5 19.3 24.3 29.2 31.7 30.6 26.6 20.4 12.6 5.4
Min °F 19.2 23.5 34.1 45.5 54.5 64 68.6 66.2 58.7 46.9 36 24.5
Max °F 28.4 32.9 44.2 56.1 65.1 74.3 78.8 76.6 69.3 57.7 45.3 33.1

Sea temperature

The graph below shows the average sea temperature.

Saint Peters average sea temperature chart (Celsius) Saint Peters average sea temperature chart (Fahrenheit)
Average sea temperature around Saint Peters in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10.3 9.8 10.4 11.8 14 16.6 19.7 22.6 21.2 17.1 13.9 11.7
°F 50.5 49.7 50.7 53.2 57.1 61.9 67.5 72.7 70.2 62.8 56.9 53

Wind speed

The graph below shows the average wind speed.

Saint Peters average winspeed by month (km/h) Saint Peters average winspeed by month (mph)
Average wind speed in Saint Peters (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 21 20 17 16 14 14 14 16 18 18
mph 12 12 13 12 10 10 9 9 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.

Saint Peters relative humidity averages
Average relative humidity in Saint Peters
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 72% 68% 64% 68% 68% 69% 70% 72% 69% 72% 76%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Saint Peters weather stats

Saint Peters weather statistics
Hottest month: July 31.4°C 88.5°F
Driest month: January 43mm 1.7ins
Sunniest month: July 10.7hrs
Coldest month: January 2.9°C 37.2°F
Wettest month: May 105mm 4.1ins
Warmest sea: August 22.6°C 72.7°F
Map showing location of Saint Peters (38.80033, -90.62651) Saint Peters map pin © Google

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