December weather forecast and climate
Riverdale, NJ

What is the temperature in December in Riverdale?

In December, in Riverdale, New Jersey, the average high-temperature is 41°F (5°C), and the average low-temperature is 25°F (-3.9°C).

How much does it rain in Riverdale in December?

In Riverdale, New Jersey, in December, typically, 3.8" (96.3mm) of precipitation is accumulated.
Average temperature in December - Riverdale, NJ
  • Average high temperature in December: 41°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in December: 25°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average rainfall in December - Riverdale, NJ
  • Average rainfall in December: 3.8"

The wettest month (with the highest rainfall) is September (4.6").
The driest month (with the lowest rainfall) is February (3").

Average daylight in December - Riverdale, NJ
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).