Bagnell Dam and Osage Power Plant · Photo: KTrimble · CC0Lake Ozark’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 89°, a January night drops to 23°, and about 4 inches of snow falls in a normal winter.
A year in Lake Ozark at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lake Ozark’s climate
Compared with towns across the U.S., with Lake Ozark’s place in Missouri beside it.
What a year in Lake Ozark feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 216 frost-free days a year
In half of years the last 32° night comes by March 31 and the first by November 3. Frost and day counts come from NOAA’s station at Lakeside, MO, 0.4 miles from the town’s center, 120 ft lower.
The 2023 USDA map puts Lake Ozark’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 1°. 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 4 inches of snow a winter
Snow, measured at Lakeside, MO, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 42 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 99 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lake Ozark
72% 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 Lakeside, MO.
Living with Lake Ozark’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
216 frost-free days in zone 7a. The last frost comes by Mar 31 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 3.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 3.7 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lake Ozark from natural hazards, river flooding is the largest share (50%); heat waves, cold waves, winter storms and ice storms together are 23%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lake Ozark and similar climates
TownRatings has no climate map of the towns around Lake Ozark yet.
Climates most like Lake Ozark’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 |
|---|---|---|---|---|
| Lake Ozark, MO | 23° | 89° | 42" | 4.3" |
| Iola, KS | 22° | 90° | 42" | 7.4" |
| Washington, DC | 27° | 89° | 44" | 5.8" |
| Mount Rainier, MD | 26° | 88° | 45" | 5.8" |
| Mascoutah, IL | 23° | 89° | 43" | 11" |
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 Lake Ozark averaged 1.2° warmer than the 1900s. The biggest change is in February (+2.7°).
A smaller shift than in 60% 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 Lake Ozark compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lake Ozark’s place among Missouri’s.
Lake Ozark weather by month
Highs, lows and precipitation from NOAA’s grid at Lake Ozark’s center; snow, wet days and snow on the ground from Lakeside, MO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 43° | 23° | 2.0" | 1.7" | 7 | 27° – 44° |
| February | 48° | 27° | 2.1" | 0.6" | 6 | 30° – 47° |
| March | 58° | 35° | 3.0" | 0.3" | 10 | 40° – 60° |
| April | 69° | 45° | 4.7" | 0.0" | 10 | 50° – 62° |
| May | 77° | 55° | 5.3" | 0.0" | 12 | 61° – 73° |
| June | 85° | 64° | 4.2" | 0.0" | 9 | 70° – 79° |
| July | 89° | 68° | 4.0" | 0.0" | 8 | 73° – 85° |
| August | 89° | 66° | 4.1" | 0.0" | 8 | 71° – 83° |
| September | 81° | 58° | 3.9" | 0.0" | 8 | 64° – 78° |
| October | 70° | 46° | 3.5" | 0.0" | 8 | 52° – 65° |
| November | 57° | 36° | 3.2" | 0.0" | 7 | 39° – 55° |
| December | 46° | 27° | 2.3" | 1.7" | 7 | 22° – 45° |
| Year | 68° | 46° | 42.2" | 4.3" | 99 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 22° to 45°. June is the most reliable, staying within 9°.
Where Lake Ozark’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 Lake Ozark’s center.
- Snow: Lakeside, MO (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Lakeside, MO, 0.4 miles from the town’s center, 120 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 Lake Ozark’s climate
What is the weather like in Lake Ozark?
A typical July afternoon reaches 89°, a January night drops to 23°, and about 4 inches of snow falls in a normal winter. Milder January nights than 56% of U.S. towns; hotter July afternoons than 74% of U.S. towns.
How cold does it get in Lake Ozark in winter?
January nights average 23°. About 88 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 27°.
How much snow does Lake Ozark get?
About 4.3 inches in a normal winter at Lakeside, MO, most of it in January and December.
How hot does it get in Lake Ozark?
July, with a typical high of 89° and a low of 68°. About 35 days a year reach 90° and 1 reach 100° (Lakeside, MO).
When is the first and last frost in Lake Ozark?
In half of years the last spring frost (32°) comes by March 31 and the first fall frost by November 3, about 216 frost-free days, at Lakeside, MO.
What growing zone is Lake Ozark in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 1°.
What is the best time of year to visit Lake Ozark?
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 Lake Ozark getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 60% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lake Ozark.
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.