December weather forecast
Delhi, IA

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Weather in December

The first month of the winter, December, is still a freezing cold month in Delhi, Iowa, with temperature in the range of an average high of 31.1°F (-0.5°C) and an average low of 20.5°F (-6.4°C).

Temperature

Delhi's December weather comes with a decrease in average high-temperatures, moving from a chilly 43.7°F (6.5°C) in November to a subzero cold 31.1°F (-0.5°C). During December, the nighttime temperature averages of 20.5°F (-6.4°C).

Humidity

In Delhi, the average relative humidity in December is 83%.

Rainfall

The month with the least rainfall in Delhi, Iowa, is December, when the rain falls for 4.5 days and typically collects 0.47" (12mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Delhi. In Delhi, during December, snow falls for 8.8 days and regularly aggregates up to 0.94" (24mm) of snow. Throughout the year, in Delhi, there are 39.4 snowfall days, and 6.81" (173mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:15 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:42 pm CST.

Sunshine

The average sunshine in December is 4h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 1 during December leads to these instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Delhi in December?

The high-temperature during December is 31.1°F (-0.5°C) and the low-temperature is 20.5°F (-6.4°C).

What is the average humidity in December in Delhi?

The average relative humidity in December is 83%.

What is the driest month in Delhi?

The month with the least rainfall in Delhi, Iowa, is December, when the rain falls for 4.5 days and typically collects 0.47" (12mm) of precipitation.

How many days does it rain in December in Delhi?

In December, the rain falls for 4.5 days. Throughout December, 0.47" (12mm) of precipitation is accumulated.

How much does it snow in Delhi in December?

In December, it is snowing for 8.8 days. Throughout December, 0.94" (24mm) of snow is accumulated.

What is the month with the shortest days in Delhi?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

What is the average length of the day in December in Delhi?

In December, the average day length in Delhi, Iowa, is 9h and 8min.

When are sunrise and sunset in December in Delhi?

In December, on the first day of the month, sunrise is at 7:15 am and sunset at 4:33 pm. On the last day of the month, in Delhi, Iowa, sunrise is at 7:34 am and sunset at 4:42 pm CST.

How long on average sun shines in December in Delhi?

In December, the average sunshine duration in Delhi, Iowa, is 4h.

What is the month with the lowest UV index in Delhi?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Delhi, Iowa.

What is the UV index reading in December in Delhi?

In December, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Delhi, IA

Average temperature in December - Delhi, IA
  • Average high temperature in December: 31.1°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in December: 20.5°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

Average pressure in December
Delhi, IA

Average pressure in December - Delhi, IA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Delhi, IA

Average wind speed in December - Delhi, IA
  • Average wind speed in December: 10.2mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in December
Delhi, IA

Average humidity in December - Delhi, IA
  • Average humidity in December: 83%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and October (75%).

Average rainfall in December
Delhi, IA

Average rainfall in December - Delhi, IA
  • Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is December (0.47").

Average rainfall days in December
Delhi, IA

Average rainfall days in December - Delhi, IA
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is June (15.4 days).
The month with the least rainy days is February (2.6 days).

Average snowfall in December
Delhi, IA

Average snowfall in December - Delhi, IA
  • Average snowfall in December: 0.94"

The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Delhi, IA

Average snowfall days in December - Delhi, IA
  • Average snowfall days in December: 8.8 days

The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Delhi, IA

Average daylight in December / Average sunshine in December - Delhi, IA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 0min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Delhi, IA

Average sunshine days in December - Delhi, IA
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in December
Delhi, IA

Average UV index in December - Delhi, IA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in December
Delhi, IA

Average cloud cover in December - Delhi, IA
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).

Average visibility in December
Delhi, IA

Average visibility in December - Delhi, IA
  • Average visibility in December: 6mi

The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).

Delhi, Iowa, USA

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