Photo: Rowen Hansen · CC BY-SA 4.0Summer arrives in force in Adrian, hotter than in 74% of U.S. towns
January nights here settle around 22°. Since 1901–2000, the year has warmed by 0.7°, most of all in January. Plan time outside for April, May, September and October, when highs sit at 67–80°.
A year in Adrian at a glance
Each month’s typical high and low, and what it brings.
What stands out about Adrian’s climate
Compared with towns across the U.S., with Adrian’s place in Missouri beside it.
What a year in Adrian feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 192 frost-free days a year
In half of years the last 32° night comes by April 12 and the first by October 23. Frost and day counts come from NOAA’s station at Butler 4w, MO, 10 miles from the town’s center, at about the same height.
The 2023 USDA map puts Adrian’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −3°. 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 10 inches of snow a winter
Snow, measured at Butler 4w, MO, falls mostly in February. Precipitation (rain plus melted snow) adds up to 42 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 105 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Adrian
77% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Butler 4w, MO.
Living with Adrian’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
192 frost-free days in zone 6b. The last frost comes by Apr 12 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 23.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 1.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Adrian from natural hazards, river flooding is the largest share (46%); heat waves, cold waves, winter storms and ice storms together are 21%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Adrian and similar climates
TownRatings has no climate map of the towns around Adrian yet.
Climates most like Adrian’s, 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 |
|---|---|---|---|---|
| Adrian, MO | 22° | 89° | 42" | 9.5" |
| Mascoutah, IL | 23° | 89° | 43" | 11" |
| Fredericksburg, VA | 25° | 89° | 43" | 11" |
| Hamilton, OH | 22° | 87° | 43" | 9.7" |
| Phoenixville, PA | 23° | 88° | 47" | 7.6" |
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 Adrian averaged 0.7° warmer than the 1900s. The biggest change is in January (+1.8°).
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 Adrian compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Adrian’s place among Missouri’s.
Adrian weather by month
Highs, lows and precipitation from NOAA’s grid at Adrian’s center; snow, wet days and snow on the ground from Butler 4w, MO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 40° | 22° | 1.5" | 2.6" | 7 | 4 | 24° – 42° |
| February | 46° | 26° | 1.9" | 3.0" | 7 | 4 | 28° – 46° |
| March | 57° | 35° | 2.7" | 1.2" | 9 | 1 | 39° – 58° |
| April | 67° | 44° | 4.5" | 0.0" | 11 | 0 | 48° – 61° |
| May | 76° | 55° | 5.8" | 0.0" | 13 | 0 | 60° – 73° |
| June | 85° | 64° | 5.2" | 0.0" | 10 | 0 | 70° – 78° |
| July | 89° | 68° | 4.5" | 0.0" | 9 | 0 | 74° – 85° |
| August | 88° | 67° | 3.9" | 0.0" | 8 | 0 | 71° – 84° |
| September | 80° | 58° | 4.3" | 0.0" | 8 | 0 | 64° – 76° |
| October | 69° | 45° | 3.4" | 0.0" | 9 | 0 | 51° – 62° |
| November | 56° | 35° | 2.7" | 0.3" | 8 | 0 | 38° – 53° |
| December | 44° | 25° | 2.0" | 2.4" | 7 | 2 | 20° – 42° |
| Year | 66° | 45° | 42.3" | 9.5" | 105 | 10 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 20° to 42°. June is the most reliable, staying within 8°.
Where Adrian’s 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 Adrian’s center.
- Snow: Butler 4w, MO.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Butler 4w, MO, 10 miles from the town’s center, at about the same height; 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 Adrian’s climate
What is the weather like in Adrian?
A typical July afternoon reaches 89°, a January night drops to 22°, and about 10 inches of snow falls in a normal winter. Colder January nights than 52% of U.S. towns; hotter July afternoons than 74% of U.S. towns.
How cold does it get in Adrian in winter?
January nights average 22°. About 111 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 24°.
How much snow does Adrian get?
About 9.5 inches in a normal winter at Butler 4w, MO, most of it in February, with snow on the ground about 10 days a year.
How hot does it get in Adrian?
July, with a typical high of 89° and a low of 68°. About 47 days a year reach 90° and 5 reach 100° (Butler 4w, MO).
When is the first and last frost in Adrian?
In half of years the last spring frost (32°) comes by April 12 and the first fall frost by October 23, about 192 frost-free days, at Butler 4w, MO.
What growing zone is Adrian in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −3°.
What is the best time of year to visit Adrian?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Adrian 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 Adrian.
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.