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Harlan (IA) Weather and Climate: A Comprehensive Guide

Harlan experiences great temperature shifts. The city's weather can transition from warm days to very cold weather. It maintains moderate precipitation patterns. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

The climate in Harlan is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 29°C in July to a very cold -1°C in the coolest month, January.

Nights are cooler, with lows often dropping to around -12°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Harlan receives mid-range precipitation levels, with 958 mm annually. The climate in Harlan shows significant variation throughout the year. Expect high rainfall in August, with an average of 154 mm of precipitation over 12 rainy days.

In contrast, January offers drier and sunnier days, with around 17 mm of snowfall over 5 snowy days. For more details, please visit our Harlan Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Harlan serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 11.2 hours of sunshine daily, and embrace the darker days in December, offering only 4.4 hours of daily sunlight. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Omaha, the United States of America (67 KM, 41 Miles).

Daily hours of sunshine

Data from: Omaha, the United States of America (67 KM, 41 Miles).

Forecast for Harlan (IA)

Mon   Dec 23
7°C | -2°C
NW 6 m/s
almost clear and no rain

almost clear and no rain

Tue   Dec 24
2°C | -5°C
SE 3 m/s
overcast and no rain

overcast and no rain

Wed   Dec 25
4°C | -3°C
SE 5 m/s
overcast and no rain

overcast and no rain

The best time of year to visit Harlan in the United States of America

During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Harlan?
    The hottest season / summer takes place in June, July, August and September.
  • When is winter in Harlan?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Harlan?
    July has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Harlan?
    The coldest month is January with an average maximum temperature of -1°C.
  • Which is the wettest month in Harlan?
    August tops the wettest month list with 154 mm of rainfall.
  • Which is the driest month in Harlan?
    January is the driest month with 17 mm of precipitation.
  • Which is the sunniest month in Harlan?
    July is the sunniest month with an average of 335 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.