Harlan weather in September (Iowa, United States of America)

Planning a trip to Harlan in September? This guide provides all the details you need.

In September, Harlan generally has high temperatures and high rainfall. Anticipate daytime temperatures around 25°C, while night temperatures can drop to 11°C.

Harlan in September usually receives high rainfall, averaging around 103 mm for the month. When we look at the climate data from the last 30 years, we can expect around 9 days of rain.

With around 247 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

In case you lean more towards enjoying temperate temperatures and rain-free days July typically offers the most optimal weather. In contrast, January, February, March and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Harlan climate page with graphs.

 

Harlan, monthly averages in September

Min Temperature 11°C  

Max Temperature 25°C  

Chance of Rain 30%  

Precipitation 103 mm  

Rainy days 9 days  

Humidity 71% *  

Sunshine 247 hours *  

Percentage Sunshine 65% *  

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

Where to go in the United States of America in September

Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Harlan in September?

For visitors traveling to Harlan, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Harlan.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.