Colman House · Photo: Ammodramus · CC0Less rain and snow falls on Diller than on 85% of U.S. towns: 31 inches a year
The coldest hours of a January night bottom out at 16° on average. Precipitation peaks in May and eases off in January. By January nights alone, it runs colder than 80% of U.S. towns. If you like long walks, April, May, September and October offer highs of 65–80°.
A year in Diller at a glance
Each month’s typical high and low, and what it brings.
What stands out about Diller’s climate
Compared with towns across the U.S., with Diller’s place in Nebraska beside it.
What a year in Diller feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 169 frost-free days a year
In half of years the last 32° night comes by April 25 and the first by October 15. Frost and day counts come from NOAA’s station at Fairbury 5s, NE, 12 miles from the town’s center, at about the same height.
The 2023 USDA map puts Diller’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −9°. 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 21 inches of snow a winter
Snow, measured at Fairbury 5s, NE, is heaviest from January through February, about 6 inches a month. Precipitation (rain plus melted snow) adds up to 31 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 91 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Diller
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 Fairbury 5s, NE.
Living with Diller’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
169 frost-free days in zone 6a. The last frost comes by Apr 25 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 15.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Diller from natural hazards, river flooding is the largest share (32%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Diller and similar climates
TownRatings has no climate map of the towns around Diller yet.
Climates most like Diller’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 |
|---|---|---|---|---|
| Diller, NE | 16° | 89° | 31" | 21" |
| Trenton, MO | 17° | 88° | 39" | 17" |
| Chillicothe, IL | 16° | 86° | 37" | 20" |
| Ottumwa, IA | 14° | 86° | 37" | 24" |
| Pratt, KS | 21° | 92° | 27" | 15" |
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 Diller averaged 1.3° warmer than the 1900s. The biggest change is in March (+2.8°).
A smaller shift than in 57% 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 Diller compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Diller’s place among Nebraska’s.
Diller weather by month
Highs, lows and precipitation from NOAA’s grid at Diller’s center; snow, wet days and snow on the ground from Fairbury 5s, NE. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 37° | 16° | 0.7" | 5.7" | 5 | 12 | 20° – 39° |
| February | 42° | 20° | 1.0" | 5.6" | 5 | 8 | 20° – 40° |
| March | 54° | 30° | 1.7" | 2.4" | 7 | 3 | 34° – 56° |
| April | 65° | 40° | 2.9" | 0.8" | 10 | 0 | 44° – 58° |
| May | 74° | 51° | 4.9" | 0.0" | 12 | 0 | 57° – 71° |
| June | 85° | 62° | 4.7" | 0.0" | 10 | 0 | 68° – 78° |
| July | 89° | 66° | 4.1" | 0.0" | 9 | 0 | 73° – 83° |
| August | 87° | 64° | 3.5" | 0.0" | 9 | 0 | 70° – 81° |
| September | 80° | 55° | 3.1" | 0.0" | 8 | 0 | 60° – 74° |
| October | 67° | 42° | 2.4" | 0.4" | 7 | 0 | 47° – 59° |
| November | 52° | 30° | 1.4" | 2.4" | 5 | 2 | 32° – 50° |
| December | 40° | 20° | 1.1" | 3.4" | 5 | 6 | 18° – 35° |
| Year | 64° | 41° | 31.4" | 20.7" | 91 | 32 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 34° to 56°. June is the most reliable, staying within 10°.
Where Diller’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 Diller’s center.
- Snow: Fairbury 5s, NE.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Fairbury 5s, NE, 12 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 Diller’s climate
What is the weather like in Diller?
A typical July afternoon reaches 89°, a January night drops to 16°, and about 21 inches of snow falls in a normal winter. Colder January nights than 80% of U.S. towns; hotter July afternoons than 72% of U.S. towns.
How cold does it get in Diller in winter?
January nights average 16°. About 144 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 20°.
How much snow does Diller get?
About 21 inches in a normal winter at Fairbury 5s, NE, heaviest from January through February, about 6 inches a month, with snow on the ground about 32 days a year.
How hot does it get in Diller?
July, with a typical high of 89° and a low of 66°. About 42 days a year reach 90° and 4 reach 100° (Fairbury 5s, NE).
When is the first and last frost in Diller?
In half of years the last spring frost (32°) comes by April 25 and the first fall frost by October 15, about 169 frost-free days, at Fairbury 5s, NE.
What growing zone is Diller in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −9°.
What is the best time of year to visit Diller?
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 Diller getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 57% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Diller.
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.