United States · 1991–2020

Best time to visit
Knoxville.

May leads for comfortable weather in Knoxville: typically 25.8°C by day, 12.7°C at night, with 114 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high25.8°C

Typical low12.7°C

Rain in May114 mm

Comfort

May

May · September · October

73climate match

Beach

August

August · June · September

73climate match

Outdoors

October

October · April · May

78climate match

The weakest month is January, scoring 5 against May’s 73 — days reach only 8.6°C, 15° below the 24°C the score treats as ideal, and nights drop to -2.8°C.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

58.6° / -2.8°

Feb

1011.2° / -1°

Mar

3016.1° / 2.5°

Apr

5821.4° / 7.2°

May

7325.8° / 12.7°

Jun

6329.5° / 17.1°

Jul

4531.1° / 19.5°

Aug

5830.9° / 18.8°

Sep

7228.2° / 15.3°

Oct

7222.2° / 8.1°

Nov

3515.7° / 2°

Dec

510.4° / -1°

Monthly climate evidence for Knoxville — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	8.6°C	-2.8°C	133 mm	10	9 h 58	5	Strong coverage
February	11.2°C	-1°C	130 mm	9.7	10 h 49	10	Strong coverage
March	16.1°C	2.5°C	133 mm	11.1	11 h 51	30	Strong coverage
April	21.4°C	7.2°C	133 mm	9.5	13 h 03	58	Strong coverage
May	25.8°C	12.7°C	114 mm	9.8	14 h 03	73	Strong coverage
June	29.5°C	17.1°C	104 mm	9.1	14 h 35	63	Strong coverage
July	31.1°C	19.5°C	152 mm	10.6	14 h 22	45	Strong coverage
August	30.9°C	18.8°C	89 mm	7.8	13 h 31	58	Strong coverage
September	28.2°C	15.3°C	105 mm	7.3	12 h 22	72	Strong coverage
October	22.2°C	8.1°C	79 mm	6.7	11 h 13	72	Strong coverage
November	15.7°C	2°C	104 mm	7.9	10 h 13	35	Strong coverage
December	10.4°C	-1°C	152 mm	10	9 h 44	5	Strong coverage

Records at KNOXVILLE EXP STN, 1966–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.6°C2 Jan 2022	-28.9°C21 Jan 1985	78 mm7 Jan 2009	329 mm2013 · driest 45 mm in 1986	46
February	27.8°C23 Feb 2018	-24.4°C5 Feb 1996	149 mm24 Feb 2019	385 mm2019 · driest 23 mm in 2007	47
March	30.0°C21 Mar 2012	-16.7°C15 Mar 1993	88 mm28 Mar 1994	293 mm1994 · driest 47 mm in 1985	45
April	32.2°C28 Apr 1986	-6.1°C8 Apr 2007	98 mm28 Apr 2011	300 mm1998 · driest 37 mm in 2021	49
May	33.9°C15 May 2018	-1.1°C11 May 2020	125 mm24 May 2000	249 mm1984 · driest 31 mm in 2014	43
June	38.3°C30 Jun 2012	5.6°C1 Jun 1984	83 mm4 Jun 2024	229 mm1989 · driest 27 mm in 1990	45
July	40.6°C1 Jul 2012	8.9°C2 Jul 1988	113 mm23 Jul 2019	269 mm1982 · driest 37 mm in 1995	45
August	38.9°C17 Aug 2007	8.9°C29 Aug 1968	79 mm18 Aug 2021	234 mm2021 · driest 16 mm in 2016	47
September	36.1°C3 Sep 2011	2.8°C23 Sep 1983	169 mm18 Sep 2012	251 mm2006 · driest 4 mm in 2023	45
October	35.0°C3 Oct 2019	-5.0°C29 Oct 1976	68 mm8 Oct 2021	173 mm1972 · driest 2 mm in 2000	49
November	28.9°C1 Nov 2016	-9.4°C15 Nov 1969	82 mm20 Nov 1974	177 mm2015 · driest 15 mm in 2016	47
December	25.6°C4 Dec 1982	-20.6°C25 Dec 1983	118 mm1 Dec 2016	319 mm2016 · driest 47 mm in 2006	43

Typical days per month at KNOXVILLE EXP STN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	22	5	<1
February	<1	0	18	4	<1
March	2	<1	11	5	0
April	9	<1	3	4	0
May	20	5	0	3	0
June	28	15	0	4	0
July	30	22	0	5	0
August	30	21	0	3	0
September	24	12	0	3	0
October	10	1	2	3	0
November	1	0	13	3	0
December	<1	0	20	5	<1

How often, not how much — every day in KNOXVILLE EXP STN’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	1%	32%	14%	40%	5.5–11.5°C
February	6%	34%	15%	46%	8.3–14.5°C
March	23%	34%	14%	43%	12.9–19.3°C
April	46%	31%	12%	36%	19.3–23.1°C
May	62%	32%	12%	41%	23.5–27.7°C
June	71%	29%	12%	33%	27.7–31.4°C
July	67%	33%	15%	41%	29.4–32.9°C
August	75%	25%	10%	28%	29.2–32.8°C
September	76%	23%	11%	22%	26.1–30.0°C
October	58%	21%	9%	19%	19.9–24.1°C
November	19%	27%	12%	33%	13.1–18.7°C
December	3%	32%	15%	41%	7.2–13.5°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1983Each stripe is one year’s mean temperature against the 33-year average. Warmest: 2016. Coolest: 1996.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4634946
NOAA station: USC00404946 · KNOXVILLE EXP STN
Station distance: 7.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 35.96°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from KNOXVILLE EXP STN is what differs

Landmark→Aldenwood Park→Amherst→Arlington→Arminda→Arrowhead→

Or put two places side by side: Knoxville vs Landmark

Best time to visitKnoxville.

May

August

October

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Knoxville.

The whole year,
without the guesswork.

Nearby, measured,
and named.