What’s the climate like in Harlan?
The current climate in Harlan features temperatures ranging from a high of 29°C to a low of 0°C throughout the year. The average yearly temperature is around 16°C. At night, temperatures in the colder months average around -10°C and in the warmer months around 18°C.
The highest temperature recorded in Harlan in recent years was 38°C in June 2021. The lowest daytime temperature recorded was -21°C in February 2021.
On average, Harlan gets 1025 mm of precipitation each year. Of this, about 89 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Harlan?
The best time to visit Harlan for mild to warm weather is April up to October. You might get some rain, but the temperatures are just right to explore Harlan.
Climate Table of Harlan
The climate table of Harlan shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 0 | 1 | 10 | 16 | 22 | 29 | 29 | 28 | 26 | 18 | 10 | 3 |
| Temp. min (°C) | -10 | -10 | -2 | 3 | 11 | 18 | 18 | 17 | 14 | 6 | -2 | -6 |
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| Precipitation (mm) | 11 | 20 | 61 | 74 | 132 | 153 | 83 | 174 | 127 | 104 | 32 | 54 |
| Snow (cm) | 20 | 35 | 5,0 | 3,1 | 0 | 0 | 0 | 0 | 0 | 0,9 | 3,1 | 22 |
| UV Index | 3 | 4 | 4 | 5 | 7 | 8 | 6 | 7 | 7 | 5 | 3 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 16°C
- Highest temperature: 29°C in June and July
- Lowest temperature: 0°C in January
- Precipitation*: 1025 mm per year, averaging 85 mm per month
- Snowfall: 89 cm per year
- Driest months: 11 mm in January, 20 mm in February and 32 mm in November
- Wettest months: 174 mm in August, 153 mm in June and 132 mm in May
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Harlan
This graph shows the average maximum temperatures per month in Harlan, Iowa. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Harlan
This graph shows how much rainfall Harlan, Iowa, gets on average per month. Rainfall is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of rainfall is measured in millimeters, and the average is calculated based on the recorded rainfall per month from past years.
Average Snowfall per Month in Harlan
This graph shows how much snow Harlan, Iowa, gets on average per month. The amount of snowfall is measured in centimeters and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Harlan
This graph shows the average UV index per month in Harlan, Iowa. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Harlan
This graph shows the average yearly temperature in Harlan, Iowa. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Harlan
This chart shows the total yearly precipitation in Harlan, Iowa, over the past few years. The total yearly precipitation, measured in millimeters, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Harlan
This chart shows the total yearly snowfall in Harlan, Iowa, over the past few years. The total yearly snowfall, measured in centimeters, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Harlan
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Average Weather in Harlan by Month
Click on a month below to see detailed weather info for Harlan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
