December weather forecast and climate
Saint Peters, MO

What is the temperature in December in Saint Peters?

The average high-temperature, in December, in Saint Peters, Missouri, is 42.1°F (5.6°C), while the average low-temperature is 25°F (-3.9°C).

How much does it rain in Saint Peters in December?

Throughout December, in Saint Peters, Missouri, 2.9" (72.6mm) of precipitation is accumulated.
Average temperature in December - Saint Peters, MO
  • Average high temperature in December: 42°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (38°F).

  • Average low temperature in December: 25°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average rainfall in December - Saint Peters, MO
  • Average rainfall in December: 2.9"

Wettest months (with the highest rainfall) are May and July (4.2").
The driest month (with the lowest rainfall) is January (1.7").

Average daylight in December - Saint Peters, MO
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

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