Photo: Chris Flook · CC BY-SA 4.0Precipitation in Leavenworth tops that of 83% of U.S. towns: 50 inches a year
In January the night’s low is typically 24°. Its July heat outdoes that of 65% of U.S. towns. Warming shows here too: 0.8° more than in 1901–2000, led by February. Radiators earn their keep from November to March, the months that average under 50°.
A year in Leavenworth at a glance
Each month’s typical high and low, and what it brings.
What stands out about Leavenworth’s climate
Compared with towns across the U.S., with Leavenworth’s place in Indiana beside it.
What a year in Leavenworth feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 184 frost-free days a year
In half of years the last 32° night comes by April 17 and the first by October 19. Frost and day counts come from NOAA’s station at English, IN, 8 miles from the town’s center, 150 ft lower.
The 2023 USDA map puts Leavenworth’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −2°. 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 50 inches of rain a year
May is the wettest month and August the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Leavenworth
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 English, IN.
Living with Leavenworth’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
184 frost-free days in zone 6b. The last frost comes by Apr 17 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 19.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Leavenworth from natural hazards, river flooding is the largest share (60%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Leavenworth and its neighbors
Every town next door is within a degree of Leavenworth in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
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 Leavenworth averaged 0.8° warmer than the 1900s. The biggest change is in February (+2.0°).
A smaller shift than in 90% 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 Leavenworth compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Leavenworth’s place among Indiana’s.
Leavenworth weather by month
Highs, lows and precipitation from NOAA’s grid at Leavenworth’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 43° | 24° | 3.7" | 26° – 43° |
| February | 47° | 27° | 3.5" | 25° – 46° |
| March | 57° | 34° | 4.7" | 38° – 58° |
| April | 69° | 43° | 5.3" | 50° – 61° |
| May | 77° | 54° | 5.4" | 60° – 72° |
| June | 85° | 62° | 4.3" | 69° – 78° |
| July | 88° | 66° | 4.4" | 72° – 82° |
| August | 87° | 64° | 3.1" | 71° – 81° |
| September | 81° | 56° | 3.7" | 64° – 74° |
| October | 70° | 44° | 3.6" | 53° – 63° |
| November | 57° | 35° | 3.9" | 39° – 52° |
| December | 46° | 28° | 4.1" | 24° – 48° |
| Year | 67° | 45° | 49.5" |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 24° to 48°. June is the most reliable, staying within 9°.
Where Leavenworth’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 Leavenworth’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: English, IN, 8 miles from the town’s center, 150 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 Leavenworth’s climate
What is the weather like in Leavenworth?
A typical July afternoon reaches 88°, a January night drops to 24°. Milder January nights than 60% of U.S. towns; hotter July afternoons than 65% of U.S. towns.
How cold does it get in Leavenworth in winter?
January nights average 24°. About 110 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 26°.
How hot does it get in Leavenworth?
July, with a typical high of 88° and a low of 66°. About 31 days a year reach 90° (English, IN).
When is the first and last frost in Leavenworth?
In half of years the last spring frost (32°) comes by April 17 and the first fall frost by October 19, about 184 frost-free days, at English, IN.
What growing zone is Leavenworth in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Leavenworth?
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 Leavenworth getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 90% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Leavenworth.
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.