Hardly any U.S. towns collect less precipitation than McKinnon: 11 inches a year
Midwinter brings lows of about 10°. May is the wettest month, January the driest. In January, nights here are colder than in 93% of U.S. towns. Comfortable outdoor weather lasts from June to August, with highs of 73–81°.
A year in McKinnon at a glance
Each month’s typical high and low, and what it brings.
What stands out about McKinnon’s climate
Compared with towns across the U.S., with McKinnon’s place in Wyoming beside it.
What a year in McKinnon feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 128 frost-free days a year
In half of years the last 32° night comes by May 22 and the first by September 29. Frost and day counts come from Manila, UT, 11 miles away.
The 2023 USDA map puts McKinnon’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −13°. 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 11 inches of rain a year
May is the wettest month and January the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in McKinnon
97% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from September 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 Manila, UT.
Living with McKinnon’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
128 frost-free days in zone 5b. The last frost comes by May 22 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 29.
Months with highs of 62–84° and lows of 40° or more: June, July and August. 17 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in McKinnon from natural hazards, river flooding is the largest share (70%); heat waves, cold waves, winter storms and ice storms together are 16%. Normals are averages; the hazards page covers the extremes.
Natural hazards →McKinnon and similar climates
TownRatings has no climate map of the towns around McKinnon yet.
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 McKinnon averaged 1.3° warmer than the 1900s. The biggest change is in March (+3.0°).
A smaller shift than in 55% 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 McKinnon compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with McKinnon’s place among Wyoming’s.
McKinnon weather by month
Highs, lows and precipitation from NOAA’s grid at McKinnon’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 34° | 10° | 0.4" | 16° – 29° |
| February | 36° | 13° | 0.6" | 18° – 32° |
| March | 45° | 20° | 0.9" | 27° – 39° |
| April | 52° | 26° | 1.2" | 34° – 46° |
| May | 62° | 35° | 1.4" | 43° – 52° |
| June | 73° | 42° | 1.1" | 52° – 62° |
| July | 81° | 49° | 1.1" | 60° – 69° |
| August | 79° | 47° | 1.2" | 59° – 66° |
| September | 69° | 38° | 1.1" | 50° – 57° |
| October | 56° | 28° | 1.1" | 33° – 47° |
| November | 42° | 18° | 0.6" | 22° – 37° |
| December | 33° | 10° | 0.5" | 17° – 28° |
| Year | 55° | 28° | 11.0" |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 22° to 37°. August is the most reliable, staying within 7°.
Where McKinnon’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 McKinnon’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Manila, UT, 11 miles from the town’s center, 630 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- 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 McKinnon’s climate
What is the weather like in McKinnon?
A typical July afternoon reaches 81°, a January night drops to 10°. Colder January nights than 93% of U.S. towns; cooler July afternoons than 88% of U.S. towns.
How cold does it get in McKinnon in winter?
January nights average 10°. About 190 nights a year reach 32° or below and 13 reach 0° or below. In the coldest January of the last 30 years the month averaged 16°.
How hot does it get in McKinnon?
July, with a typical high of 81° and a low of 49°. About 6 days a year reach 90° (Manila, UT).
When is the first and last frost in McKinnon?
In half of years the last spring frost (32°) comes by May 22 and the first fall frost by September 29, about 128 frost-free days, at Manila, UT.
What growing zone is McKinnon in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −13°.
What is the best time of year to visit McKinnon?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is McKinnon getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 55% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in McKinnon.
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.