Photo: Billwhittaker at English Wikipedia · CC BY-SA 3.0Winter nights in Mediapolis are colder than in 84% of U.S. towns
Sunny July days climb to about 85°. Precipitation is light here, less than falls on 66% of U.S. towns. December has warmed most since 1901–2000, part of a 0.7° rise. Homes need heating from November to March, the months averaging under 50°.
A year in Mediapolis at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mediapolis’ climate
Compared with towns across the U.S., with Mediapolis’ place in Iowa beside it.
What a year in Mediapolis feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 202 frost-free days a year
In half of years the last 32° night comes by April 8 and the first by October 29. Frost and day counts come from NOAA’s station at Gladstone Dam 18, IL, 11 miles from the town’s center, 230 ft lower.
The 2023 USDA map puts Mediapolis’ center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −10°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 17 inches of snow a winter
Snow, measured at Gladstone Dam 18, IL, falls mostly in February. Precipitation (rain plus melted snow) adds up to 38 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 103 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Mediapolis
84% of the work is heating. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Gladstone Dam 18, IL.
Living with Mediapolis’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
202 frost-free days in zone 5b. The last frost comes by Apr 8 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 29.
Months with highs of 62–84° and lows of 40° or more: April, May, June, August, September and October. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Mediapolis from natural hazards, river flooding is the largest share (47%); heat waves, cold waves, winter storms and ice storms together are 11%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Mediapolis and similar climates
TownRatings has no climate map of the towns around Mediapolis yet.
Climates most like Mediapolis’, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Mediapolis, IA | 15° | 85° | 38" | 17" |
| Shorewood, IL | 16° | 84° | 38" | 17" |
| West Lafayette, IN | 18° | 84° | 40" | 19" |
| Van Wert, OH | 19° | 84° | 39" | 17" |
| Savannah, MO | 18° | 87° | 37" | 21" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Mediapolis averaged 0.7° warmer than the 1900s. The biggest change is in December (+1.9°).
A smaller shift than in 93% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Mediapolis compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mediapolis’ place among Iowa’s.
Mediapolis weather by month
Highs, lows and precipitation from NOAA’s grid at Mediapolis’ center; snow, wet days and snow on the ground from Gladstone Dam 18, IL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 31° | 15° | 1.5" | 4.9" | 7 | 15° – 35° |
| February | 36° | 19° | 1.7" | 6.3" | 7 | 14° – 39° |
| March | 49° | 30° | 2.5" | 1.8" | 8 | 31° – 53° |
| April | 62° | 40° | 3.7" | 0.3" | 10 | 42° – 58° |
| May | 72° | 52° | 5.1" | 0.0" | 12 | 56° – 69° |
| June | 81° | 61° | 5.0" | 0.0" | 10 | 68° – 75° |
| July | 85° | 65° | 4.0" | 0.0" | 9 | 69° – 80° |
| August | 83° | 63° | 3.9" | 0.0" | 9 | 67° – 78° |
| September | 77° | 55° | 3.6" | 0.0" | 7 | 60° – 70° |
| October | 64° | 43° | 3.0" | 0.1" | 8 | 48° – 59° |
| November | 49° | 31° | 2.3" | 0.3" | 8 | 32° – 50° |
| December | 36° | 21° | 1.8" | 3.2" | 7 | 13° – 38° |
| Year | 60° | 41° | 38.3" | 16.9" | 103 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 14° to 39°. June is the most reliable, staying within 6°.
Where Mediapolis’ numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Mediapolis’ center.
- Snow: Gladstone Dam 18, IL.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Gladstone Dam 18, IL, 11 miles from the town’s center, 230 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Mediapolis’ climate
What is the weather like in Mediapolis?
A typical July afternoon reaches 85°, a January night drops to 15°, and about 17 inches of snow falls in a normal winter. Colder January nights than 84% of U.S. towns; cooler July afternoons than 54% of U.S. towns.
How cold does it get in Mediapolis in winter?
January nights average 15°. About 122 nights a year reach 32° or below and 9 reach 0° or below. In the coldest January of the last 30 years the month averaged 15°.
How much snow does Mediapolis get?
About 17 inches in a normal winter at Gladstone Dam 18, IL, most of it in February.
How hot does it get in Mediapolis?
July, with a typical high of 85° and a low of 65°. About 21 days a year reach 90° (Gladstone Dam 18, IL).
When is the first and last frost in Mediapolis?
In half of years the last spring frost (32°) comes by April 8 and the first fall frost by October 29, about 202 frost-free days, at Gladstone Dam 18, IL.
What growing zone is Mediapolis in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −10°.
What is the best time of year to visit Mediapolis?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Mediapolis getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 93% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mediapolis.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.