Photo: Chris857 · CC BY-SA 4.0Hancock has some of the coolest summers among U.S. towns
Nights in January average 8°. By January nights alone, it runs colder than 96% of U.S. towns. Since 1901–2000, the year has warmed by 1.7°, most of all in December. Keep the boiler serviced for the months from October to April, which average under 50°.
A year in Hancock at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hancock’s climate
Compared with towns across the U.S., with Hancock’s place in Michigan beside it.
What a year in Hancock feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 138 frost-free days a year
In half of years the last 32° night comes by May 17 and the first by October 1. Frost and day counts come from NOAA’s station at Hancock Houghton Co Airport, 6 miles from the town’s center, 290 ft higher.
The 2023 USDA map puts Hancock’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −14°. 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 29 inches of rain a year
September is the wettest month and February the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Hancock
98% 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 Hancock Houghton Co Airport.
Living with Hancock’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
138 frost-free days in zone 5b. The last frost comes by May 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 1.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 12 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Hancock from natural hazards, river flooding is the largest share (63%); heat waves, cold waves, winter storms and ice storms together are 31%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Hancock and its neighbors
Every town next door is within a degree of Hancock 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 Hancock averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.1°).
A bigger shift than in 75% 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 Hancock compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Hancock’s place among Michigan’s.
Hancock weather by month
Highs, lows and precipitation from NOAA’s grid at Hancock’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 23° | 8° | 2.0" | 4° – 25° |
| February | 27° | 8° | 1.2" | 5° – 30° |
| March | 37° | 16° | 1.4" | 17° – 41° |
| April | 49° | 28° | 2.2" | 32° – 46° |
| May | 63° | 39° | 2.9" | 45° – 56° |
| June | 72° | 48° | 3.1" | 57° – 65° |
| July | 77° | 54° | 3.2" | 59° – 70° |
| August | 76° | 53° | 3.0" | 59° – 69° |
| September | 68° | 47° | 3.4" | 51° – 63° |
| October | 54° | 36° | 3.3" | 40° – 50° |
| November | 40° | 26° | 2.2" | 24° – 41° |
| December | 29° | 15° | 1.7" | 13° – 31° |
| Year | 51° | 32° | 29.4" |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 5° to 30°. June is the most reliable, staying within 9°.
Where Hancock’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 Hancock’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Hancock Houghton Co Airport, 6 miles from the town’s center, 290 ft higher; 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 Hancock’s climate
What is the weather like in Hancock?
A typical July afternoon reaches 77°, a January night drops to 8°. Colder January nights than 96% of U.S. towns; cooler July afternoons than 97% of U.S. towns.
How cold does it get in Hancock in winter?
February nights average 8°. About 175 nights a year reach 32° or below and 17 reach 0° or below. In the coldest February of the last 30 years the month averaged 5°.
How hot does it get in Hancock?
July, with a typical high of 77° and a low of 54°. About 2 days a year reach 90° (Hancock Houghton Co Airport).
When is the first and last frost in Hancock?
In half of years the last spring frost (32°) comes by May 17 and the first fall frost by October 1, about 138 frost-free days, at Hancock Houghton Co Airport.
What growing zone is Hancock in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −14°.
What is the best time of year to visit Hancock?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Hancock getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 75% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hancock.
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.