Climate · Miles

Miles, IA climate

Miles has cold, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 13°, and about 32 inches of snow falls in a normal winter.

NOAA 1991-2020 climate normals Updated once a decade
July high
83°
313th coolest of 1,026 Iowa towns
January low
13°
304th mildest of 1,026 Iowa towns
Rain + melted snow
38 in
69th wettest of 1,026 Iowa towns
Snow a winter
32 in
482nd snowiest of 1,020 Iowa towns
A normal year

What a year in Miles feels like

Winter

32° / 16°
Typical high / low · 11 days with an inch or more of snow

Spring

59° / 38°
Typical high / low · Last frost around Apr 13

Summer

82° / 61°
Typical high / low · 13 days reach 90° in a normal year

Fall

61° / 41°
Typical high / low · First frost around Oct 26
Best months to be outsideMayJunJulAugSepOctHighs of 62–84° and lows of 40° or more
Month by month

Miles weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January28°13°1.4" 9.3"822 11° – 33°
February33°17°1.7" 8.3"817 11° – 37°
March46°28°2.4" 3.9"96 29° – 52°
April60°38°3.8" 0.4"110 40° – 56°
May71°50°4.4" 0.1"120 55° – 67°
June80°59°5.4" 0110 67° – 74°
July83°63°4.4" 090 67° – 80°
August81°61°3.9" 080 65° – 78°
September75°53°3.9" 090 58° – 69°
October62°41°2.8" 0.2"80 47° – 57°
November47°30°2.3" 1.3"82 30° – 47°
December34°19°1.9" 8.4"913 12° – 36°
Year58°39°38.4"31.9"10960

“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.

Rain & snow

Rain and snow in Miles

Miles gets 38 inches of rain and melted snow a year. June is the wettest month and January the driest. Rain or snow falls on about 109 days a year. Snow covers the ground about 60 days of the year.

38 in
Rain + melted snow a year
Less rain than 55% of U.S. towns
32 in
Snow in a normal winter
More snow than 60% of U.S. towns
60 days
With 1"+ of snow on the ground
More than 72% of U.S. towns

Rain + melted snow by month

Inches of water
5.4"

Snowfall by month

Inches of snow
9.3"
Frost & the growing season

About 195 frost-free days a year

In half of years the last 32° night comes by April 13 and the first one by October 26. That leaves about 195 frost-free days for gardens, longer than 69% of U.S. towns.

132
nights at or below 32° in a normal year
14
nights below 0° in a normal year
13
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

90° days by month

Average days at 90° or more
Heating & cooling

Heating and cooling a home in Miles

Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Miles, 87% of that work is heating and 13% is cooling, so the furnace matters far more than the air conditioner.

87%heating
6,394 heating degree daysMore heating than 64% of U.S. towns
937 cooling degree daysMore cooling than 57% of U.S. towns

Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.

Compared with other towns

How Miles compares

Summer heat83° July high
Cooler than 64% of U.S. towns313th coolest of 1,026 Iowa towns
Winter cold13° January low
Colder than 76% of U.S. towns304th mildest of 1,026 Iowa towns
Precipitation38" a year
Drier than 55% of U.S. towns69th wettest of 1,026 Iowa towns
Snow32" a winter
Snowier than 60% of U.S. towns482nd snowiest of 1,020 Iowa towns
Growing season195 frost-free days
Longer than 69% of U.S. towns7th longest of 1,026 Iowa towns

Compared with every U.S. town and city on TownTapestry, each counted once.

Then and now

Warmer than it used to be

+1.1°1991–2020 average vs. the 20th century (1901–2000)

The last 30 years in Miles averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.2°). The shift is smaller than in 61% of U.S. towns.

❄️ Winter+1.8° now 24°, was 22°
🌷 Spring+1.3° now 49°, was 47°
☀️ Summer+0.5° now 71°, was 71°
🍂 Fall+0.9° now 51°, was 50°

Change by month1991–2020 average minus 1901–2000 average, at Miles’s spot on NOAA’s grid

Year to year

How much a month can swing

A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 11° to 37°. June is the most reliable, staying within 7°.

Coldest to warmest month in 30 yearsNormal
Questions

Common questions about Miles’s climate

What is the coldest month in Miles?

January, with a typical high of 28° and a low of 13°.

What is the hottest month in Miles?

July, with a typical high of 83° and a low of 63°. About 13 days a year reach 90°.

How much snow does Miles get?

About 32 inches in a normal winter, most of it in January.

When is the first frost in Miles?

In half of years the first 32° night comes by October 26, and the last spring frost by April 13.

What is the rainiest month in Miles?

June, with 5.4 inches of rain and melted snow. The year totals 38 inches.

Temperatures and rainfall come from NOAA’s gridded climate normals for Miles itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Bellevue L&d 12, IA (16 mi, snow) and Fulton L&d #13, IL (13 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.

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