Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
During Hiawatha's transition into December, the average high-temperature lessens, moving from a frosty 44.8°F (7.1°C) in November to an icy 32.2°F (0.1°C). Hiawatha's average low-temperature during December nights is observed to be a freezing cold 21.7°F (-5.7°C).Humidity
In December, the average relative humidity in Hiawatha, Iowa, is 82%.Rainfall
In Hiawatha, during December, the rain falls for 6.7 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, there are 138.6 rainfall days, and 27.8" (706mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Hiawatha, Iowa. In Hiawatha, Iowa, during December, snow falls for 9.1 days and regularly aggregates up to 2.8" (71mm) of snow. In Hiawatha, during the entire year, snow falls for 41.2 days and aggregates up to 16.73" (425mm) of snow.Daylight
December has the shortest days of the year in Hiawatha, Iowa, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:16 am and sunset at 4:36 pm. On the last day of December, in Hiawatha, sunrise is at 7:34 am and sunset at 4:45 pm CST.
Sunshine
In December, the average sunshine is 4.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 during December leads to these advisories:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Hiawatha in December?
What is the average humidity in December in Hiawatha?
How much does it rain in Hiawatha in December?
How many days does it snow in December in Hiawatha?
What is the month with the shortest days in Hiawatha?
How many hours of daylight does Hiawatha have in December?
What time are sunrise and sunset in December in Hiawatha?
How many hours of sunshine does Hiawatha have in December?
What is the month with the lowest UV index in Hiawatha?
What is the UV index intensity in December in Hiawatha?
Average temperature in December
Hiawatha, IA
- Average high temperature in December: 32.2°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in December: 21.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in December
Hiawatha, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Hiawatha, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Hiawatha, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Hiawatha, IA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (4.37").
The driest months (with the least rainfall) are January and February (1.18").
Average rainfall days in December
Hiawatha, IA
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Hiawatha, IA
- Average snowfall in December: 2.8"
The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hiawatha, IA
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hiawatha, 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 12min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Hiawatha, IA
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in December
Hiawatha, IA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Hiawatha, IA
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Hiawatha, 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).
Hiawatha, Iowa, USA
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