Shamrock Township has colder winter nights than 91% of U.S. towns
On a normal July day the thermometer tops out near 86°. Seasons differ by 74°, from the coldest nights to the warmest afternoons. It is a dry place: less rain and snow fall here than on 87% of U.S. towns. Central heating does most of its work from October to April, in months below 50° on average.
A year in Shamrock Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Shamrock Township’s climate
Compared with towns across the U.S., with Shamrock Township’s place in Nebraska beside it.
What a year in Shamrock Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 159 frost-free days a year
In half of years the last 32° night comes by May 1 and the first by October 7. Frost and day counts come from NOAA’s station at Chambers, NE, 7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Shamrock Township’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −15°. 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 26 inches of snow a winter
Snow, measured at O'neill, NE, falls mostly in February and December. Precipitation (rain plus melted snow) adds up to 26 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 81 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Shamrock Township
90% of the work is heating, so the furnace matters far more than the air conditioner. 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 Chambers, NE.
Living with Shamrock Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
159 frost-free days in zone 5b. The last frost comes by May 1 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 7.
Months with highs of 62–84° and lows of 40° or more: May, June, August and September.
Parks & trails →Of the yearly building losses FEMA expects in Shamrock Township from natural hazards, river flooding is the largest share (23%); heat waves, cold waves, winter storms and ice storms together are 26%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Shamrock Township and its neighbors
Every town next door is within a degree of Shamrock Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Shamrock Township’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 |
|---|---|---|---|---|
| Shamrock Township, NE | 12° | 86° | 26" | 26" |
| Council Bluffs, IA | 14° | 87° | 33" | 27" |
| Rapid City, SD | 14° | 86° | 19" | 36" |
| Livonia, MI | 18° | 84° | 33" | 31" |
| Marshall, MN | 6° | 84° | 28" | 44" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Shamrock Township averaged 0.9° warmer than the 1900s. The biggest change is in January (+3.1°).
A smaller shift than in 86% 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 Shamrock Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Shamrock Township’s place among Nebraska’s.
Shamrock Township weather by month
Highs, lows and precipitation from NOAA’s grid at Shamrock Township’s center; snow, wet days and snow on the ground from O'neill, NE. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 33° | 12° | 0.5" | 4.1" | 4 | 13 | 15° – 37° |
| February | 37° | 15° | 0.7" | 5.8" | 5 | 12 | 14° – 35° |
| March | 49° | 25° | 1.4" | 4.7" | 6 | 6 | 28° – 50° |
| April | 59° | 35° | 3.0" | 1.7" | 8 | 2 | 39° – 53° |
| May | 70° | 45° | 4.1" | 0.4" | 11 | 0 | 52° – 63° |
| June | 80° | 56° | 3.8" | 0.0" | 10 | 0 | 64° – 73° |
| July | 86° | 61° | 3.3" | 0.0" | 8 | 0 | 66° – 81° |
| August | 84° | 59° | 3.3" | 0.0" | 9 | 0 | 66° – 75° |
| September | 76° | 50° | 2.5" | 0.0" | 6 | 0 | 57° – 68° |
| October | 62° | 37° | 2.3" | 0.9" | 7 | 1 | 42° – 55° |
| November | 48° | 24° | 0.9" | 2.7" | 4 | 3 | 26° – 45° |
| December | 35° | 15° | 0.7" | 5.3" | 4 | 12 | 14° – 31° |
| Year | 60° | 36° | 26.4" | 25.6" | 81 | 50 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 28° to 50°. June is the most reliable, staying within 9°.
Where Shamrock Township’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 Shamrock Township’s center.
- Snow: O'neill, NE.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Chambers, NE, 7 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 Shamrock Township’s climate
What is the weather like in Shamrock Township?
A typical July afternoon reaches 86°, a January night drops to 12°, and about 26 inches of snow falls in a normal winter. Colder January nights than 91% of U.S. towns; hotter July afternoons than 55% of U.S. towns.
How cold does it get in Shamrock Township in winter?
January nights average 12°. About 160 nights a year reach 32° or below and 15 reach 0° or below. In the coldest January of the last 30 years the month averaged 15°.
How much snow does Shamrock Township get?
About 26 inches in a normal winter at O'neill, NE, most of it in February and December, with snow on the ground about 50 days a year.
How hot does it get in Shamrock Township?
July, with a typical high of 86° and a low of 61°. About 23 days a year reach 90° and 1 reach 100° (Chambers, NE).
When is the first and last frost in Shamrock Township?
In half of years the last spring frost (32°) comes by May 1 and the first fall frost by October 7, about 159 frost-free days, at Chambers, NE.
What growing zone is Shamrock Township in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −15°.
What is the best time of year to visit Shamrock Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Shamrock Township getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 86% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Shamrock Township.
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.