Guest, Sign inJoin

Post to Flat Top Mountain

We’ll email a one-tap link to publish your post. No password, and nothing is public until you click it.
Already a member? Sign in
Climate in Flat Top Mountain · NOAA 1991–2020 normals

Flat Top Mountain sits near the top of U.S. towns for precipitation, with 61 inches a year

In January the night’s low is typically 30°. Winters are mild: January nights here are milder than in 72% of U.S. towns. Compared with 1901–2000, the average now sits 0.9° higher. The heating season runs November to February: each of those months averages under 50°.

Milder January nights than 72% of U.S. towns#34Mildest winters  of 185 in TN
Less snow than 71% of U.S. towns#109Least snow  of 185 in TN
All TN rankings →

A year in Flat Top Mountain at a glance

Each month’s typical high and low, and what it brings.

Jan47°30°
Feb52°33°
Mar60°40°
Apr70°48° Last frost ~Apr 7
May77°57°
Jun83°63° 2 days 90°+
Jul86°67° 6 days 90°+
Aug86°66° 6 days 90°+
Sep81°60° 2 days 90°+
Oct71°49° First frost ~Oct 29
Nov now59°39°
Dec50°33° Wettest

What stands out about Flat Top Mountain’s climate

Compared with towns across the U.S., with Flat Top Mountain’s place in Tennessee beside it.

A normal year

What a year in Flat Top Mountain feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
50° / 32°
2 days with 1"+ of snow
Spring
69° / 48°
Last frost around Apr 7
Summer
85° / 65°
17 days reach 90°
Fall
70° / 49°
First frost around Oct 29
Best months to be outsideAprMayJunSepOctHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 203 frost-free days a year

In half of years the last 32° night comes by April 7 and the first by October 29. Frost and day counts come from NOAA’s station at Soddy Daisy-mowbray Mtn, TN, 4 miles from the town’s center, 100 ft higher.

82
nights at or below 32° in a normal year
87th fewest of 185 in Tennessee
Fewer freezing nights than 68% of U.S. towns
<1
nights at or below 0°
105th fewest of 185 in Tennessee
Fewer nights at or below 0° than 64% of U.S. towns
17
days that reach 90°
11th fewest of 185 in Tennessee
Fewer 90° days than 56% of U.S. towns
<1
days that reach 100°
40th fewest of 185 in Tennessee
Fewer 100° days than 56% of U.S. towns
7bUSDA zone
Plant hardiness zone 7b

The 2023 USDA map puts Flat Top Mountain’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 6°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

21
JFMAMJJASOND

90° days by month

Average days at 90° or more

6.3
JFMAMJJASOND
Rain & snow

About 4 inches of snow a winter

Snow, measured at Soddy Daisy-mowbray Mtn, TN, falls mostly in February. Precipitation (rain plus melted snow) adds up to 61 inches a year; December is the wettest month and October the driest. Rain or snow falls on about 95 days a year.

61"
Rain + melted snow a year
4th wettest of 185 in Tennessee
Wetter than 97% of U.S. towns
4.3"
Snow in a normal winter
109th least snowy of 185 in Tennessee
Less snow than 71% of U.S. towns

Rain + melted snow by month

Inches of water

6.3"
JFMAMJJASOND

Snowfall by month

Inches of snow

2"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in Flat Top Mountain

75% of the work is heating. Months averaging under 55° run from November through March.

3,793 heating degree daysLess heating than 72% of U.S. towns
1,275 cooling degree daysMore cooling than 67% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Soddy Daisy-mowbray Mtn, TN.

Living here

Living with Flat Top Mountain’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

203 frost-free days in zone 7b. The last frost comes by Apr 7 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 29.

Get outside

Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 26 miles of trails are waiting.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in Flat Top Mountain from natural hazards, river flooding is the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door

Flat Top Mountain and its neighbors

Mowbray Mountain has the coldest January nights next door (29°, 1° colder) and Soddy-Daisy the hottest July afternoons (87°, 1° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.

Falling Water: January low 31°, July high 89°Middle Valley: January low 31°, July high 89°Chattanooga: January low 31°, July high 90°Mowbray Mountain: January low 29°, July high 85°Soddy-Daisy: January low 30°, July high 87°Flat Top Mountain: January low 30°, July high 86°Flat Top MountainMowbray MountainSoddy-Daisy
ColderMilder29° to 31°
Mowbray Mountain28.8° −1.0°
Flat Top Mountain29.8°
Soddy-Daisy30.2° about the same

Climates most like Flat Top Mountain’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.

TownJan. lowJuly highPrecip.Snow
Flat Top Mountain, TN30°86°61"4.3"
Travelers Rest, SC32°88°60"1.9"
Marion, NC28°88°58"7.1"
Murray, KY27°89°54"6.5"
Mena, AR29°90°58"4.0"

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.

Then and now

Warmer than it used to be

The last 30 years in Flat Top Mountain averaged 0.9° warmer than the 1900s. The biggest change is in December (+1.9°).

+0.9°1991–2020 vs. 1901–2000

A smaller shift than in 86% of U.S. towns.

Winter+1.4°now 41°, was 39°
Spring+0.8°now 59°, was 58°
Summer+0.6°now 75°, was 75°
Fall+0.7°now 60°, was 59°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.

Compared with other towns

How Flat Top Mountain compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Flat Top Mountain’s place among Tennessee’s.

Summer heat86° July high
Hotter July afternoons than 58% of U.S. towns165th hottest of 185 in Tennessee
Winter cold30° January low
Milder January nights than 72% of U.S. towns34th mildest of 185 in Tennessee
Precipitation61" a year
Wetter than 97% of U.S. towns4th wettest of 185 in Tennessee
Snow4.3" a winter
Less snow than 71% of U.S. towns109th least snowy of 185 in Tennessee
Hot days17 days at 90°+
Fewer 90° days than 56% of U.S. towns11th fewest of 185 in Tennessee
Freezing nights82 a year
Fewer freezing nights than 68% of U.S. towns87th fewest of 185 in Tennessee
Growing season203 frost-free days
A longer frost-free season than 69% of U.S. towns116th longest of 185 in Tennessee
Month by month

Flat Top Mountain weather by month

Highs, lows and precipitation from NOAA’s grid at Flat Top Mountain’s center; snow, wet days and snow on the ground from Soddy Daisy-mowbray Mtn, TN. 1991–2020 normals.

MonthHighLowRain + meltSnowWet days30-yr range
January47°30°5.5"1.4"830° – 46°
February52°33°5.5"1.8"933° – 50°
March60°40°5.7"0.3"944° – 60°
April70°48°5.6"0.0"954° – 64°
May77°57°4.5"0.0"861° – 72°
June83°63°5.0"0.0"869° – 77°
July86°67°4.9"0.0"973° – 80°
August86°66°4.0"0.0"871° – 81°
September81°60°4.8"0.0"667° – 76°
October71°49°4.0"0.0"656° – 65°
November59°39°4.9"0.0"743° – 54°
December50°33°6.3"0.8"833° – 52°
Year68°49°60.5"4.3"95
Year to year

How much a month can swing

A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 33° to 52°. July is the most reliable, staying within 7°.

Coldest to warmest month in 30 yearsNormal
Sources

Where Flat Top Mountain’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 Flat Top Mountain’s center.
  • Snow: Soddy Daisy-mowbray Mtn, TN.
  • Frost, freezing nights, 90° and 100° days, heating and cooling: Soddy Daisy-mowbray Mtn, TN, 4 miles from the town’s center, 100 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 Flat Top Mountain’s climate

What is the weather like in Flat Top Mountain?

A typical July afternoon reaches 86°, a January night drops to 30°, and about 4 inches of snow falls in a normal winter. Milder January nights than 72% of U.S. towns; hotter July afternoons than 58% of U.S. towns.

How cold does it get in Flat Top Mountain in winter?

January nights average 30°. About 82 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 30°.

How much snow does Flat Top Mountain get?

About 4.3 inches in a normal winter at Soddy Daisy-mowbray Mtn, TN, most of it in February.

How hot does it get in Flat Top Mountain?

July, with a typical high of 86° and a low of 67°. About 17 days a year reach 90° (Soddy Daisy-mowbray Mtn, TN).

When is the first and last frost in Flat Top Mountain?

In half of years the last spring frost (32°) comes by April 7 and the first fall frost by October 29, about 203 frost-free days, at Soddy Daisy-mowbray Mtn, TN.

What growing zone is Flat Top Mountain in?

Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 6°.

What is the best time of year to visit Flat Top Mountain?

By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.

Is Flat Top Mountain getting warmer?

Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 86% of U.S. towns.

Neighbors talk weather

Gardens, snow, and the best days of the year in Flat Top Mountain.

Town Square →
Ask your neighbors

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.