Hardly any U.S. towns see harsher January nights than Jump River
July afternoons average 79°. Summers stay cool: July afternoons here are cooler than in 95% of U.S. towns. Warming shows here too: 1.3° more than in 1901–2000, led by December. Warm coats and heating bills mark the months from October to April, when means dip under 50°.
A year in Jump River at a glance
Each month’s typical high and low, and what it brings.
What stands out about Jump River’s climate
Compared with towns across the U.S., with Jump River’s place in Wisconsin beside it.
What a year in Jump River feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 125 frost-free days a year
In half of years the last 32° night comes by May 20 and the first by September 23. Frost and day counts come from NOAA’s station at Jump Rvr 3e, WI, 1.1 miles from the town’s center, at about the same height.
The 2023 USDA map puts Jump River’s center in zone 4a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −27°. 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 70 inches of snow a winter
Snow, measured at Jump Rvr 3e, WI, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 33 inches a year; June is the wettest month and February 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 Jump River
97% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Jump Rvr 3e, WI.
Living with Jump River’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
125 frost-free days in zone 4a. The last frost comes by May 20 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 23.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 9.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Jump River from natural hazards, river flooding is the largest share (61%); heat waves, cold waves, winter storms and ice storms together are 24%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Jump River and its neighbors
Every town next door is within a degree of Jump River in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Jump River’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 |
|---|---|---|---|---|
| Jump River, WI | 3° | 79° | 33" | 70" |
| Beekmantown, NY | 9° | 80° | 35" | 80" |
| St. Joseph, MN | 3° | 81° | 30" | 57" |
| Littleton, NH | 6° | 80° | 40" | 68" |
| St. Johnsbury, VT | 5° | 80° | 40" | 87" |
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 Jump River averaged 1.3° warmer than the 1900s. The biggest change is in December (+3.3°).
A smaller shift than in 52% 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 Jump River compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Jump River’s place among Wisconsin’s.
Jump River weather by month
Highs, lows and precipitation from NOAA’s grid at Jump River’s center; snow, wet days and snow on the ground from Jump Rvr 3e, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 22° | 3° | 1.1" | 17.2" | 8 | 29 | 0° – 25° |
| February | 27° | 6° | 1.0" | 13.7" | 6 | 27 | 4° – 30° |
| March | 39° | 18° | 1.6" | 11.0" | 7 | 22 | 20° – 44° |
| April | 53° | 30° | 2.8" | 3.9" | 9 | 4 | 30° – 49° |
| May | 66° | 42° | 3.8" | 0.5" | 10 | 0 | 48° – 61° |
| June | 75° | 52° | 4.6" | 0.0" | 11 | 0 | 60° – 68° |
| July | 79° | 56° | 3.9" | 0.0" | 10 | 0 | 62° – 72° |
| August | 77° | 54° | 4.0" | 0.0" | 8 | 0 | 60° – 70° |
| September | 69° | 47° | 3.6" | 0.1" | 9 | 0 | 50° – 63° |
| October | 55° | 35° | 3.2" | 0.8" | 9 | 0 | 39° – 51° |
| November | 39° | 23° | 1.9" | 6.2" | 7 | 8 | 22° – 42° |
| December | 27° | 11° | 1.3" | 17.0" | 8 | 26 | 6° – 29° |
| Year | 52° | 32° | 32.7" | 70.4" | 103 | 115 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 4° to 30°. June is the most reliable, staying within 8°.
Where Jump River’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 Jump River’s center.
- Snow: Jump Rvr 3e, WI (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Jump Rvr 3e, WI, 1.1 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 Jump River’s climate
What is the weather like in Jump River?
A typical July afternoon reaches 79°, a January night drops to 3°, and about 70 inches of snow falls in a normal winter. Colder January nights than all but 118 U.S. towns; cooler July afternoons than 95% of U.S. towns.
How cold does it get in Jump River in winter?
January nights average 3°. About 178 nights a year reach 32° or below and 35 reach 0° or below. In the coldest January of the last 30 years the month averaged 0°.
How much snow does Jump River get?
About 70 inches in a normal winter at Jump Rvr 3e, WI, most of it in January and December, with snow on the ground about 115 days a year.
How hot does it get in Jump River?
July, with a typical high of 79° and a low of 56°. About 2 days a year reach 90° (Jump Rvr 3e, WI).
When is the first and last frost in Jump River?
In half of years the last spring frost (32°) comes by May 20 and the first fall frost by September 23, about 125 frost-free days, at Jump Rvr 3e, WI.
What growing zone is Jump River in?
Zone 4a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −27°.
What is the best time of year to visit Jump River?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Jump River getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 52% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Jump River.
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.