Is Atlanta sunnier than Chattanooga?

Atlanta is the sunnier: about 2,449 hours of sunshine a year versus 2,300 — a difference of 149 hours.

Which is warmer, Atlanta or Chattanooga?

Year-round daytime highs are similar: Atlanta averages 23°C (73°F), Chattanooga 22°C (72°F).

Which is better in winter (November–February), Atlanta or Chattanooga?

Atlanta scores better across November–February: 34/100 average versus 24, with daytime highs around 14°C.

Atlanta vs Chattanooga: which is sunnier?

🇺🇸 United States vs 🇺🇸 United States · 171 km apart · long-term climate normals (NASA POWER, 2001–2020)

Atlanta is the sunnier overall: about 2,449 hours of sunshine a year to Chattanooga's 2,300. Atlanta has the higher Sunshine Score in 9 of 12 months; the other 3 are within 2 points.

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	Atlanta	Chattanooga
Sunshine hours / year	2,449	2,300
Sunniest month	October (78/100)	October (76/100)
Nov–Feb average score	34/100	24/100
Jun–Aug average score	71/100	67/100
Rain / year	1,262 mm	1,354 mm
Peak midday UV	8 (very high)	8 (very high)

Atlanta vs Chattanooga month by month

Month	Sunshine Score		Day high °C		Rain mm
Month	Atlanta	Chattanooga	Atlanta	Chattanooga	Atlanta	Chattanooga
January	19	6	11°	9°	103	109
February	30	23	13°	12°	119	122
March	59	53	18°	17°	120	118
April	75	71	22°	22°	100	115
May	76	71	27°	26°	95	115
June	73	73	31°	31°	108	106
July	64	62	33°	33°	118	127
August	75	67	32°	33°	100	96
September	76	72	29°	30°	92	108
October	78	76	24°	23°	83	89
November	57	48	17°	16°	94	109
December	29	17	13°	11°	130	140

The sunnier month by month: Jan Atlanta · Feb Atlanta · Mar Atlanta · Apr Atlanta · May Atlanta · Jun even · Jul even · Aug Atlanta · Sep Atlanta · Oct even · Nov Atlanta · Dec Atlanta.

When to pick which

November–February: Atlanta (average score 34/100 vs 24). Atlanta is the warmer, around 14°C daytime highs vs 12°C. See the winter sun ranking.
March–May: Atlanta (average score 70/100 vs 65). Daytime highs are similar (22°C vs 22°C).
June–August: Atlanta (average score 71/100 vs 67). Daytime highs are similar (32°C vs 32°C).
September–October: Atlanta (average score 77/100 vs 74). Daytime highs are similar (27°C vs 27°C).

Full month-by-month guides: Atlanta weather by month · Chattanooga weather by month · Best time to visit United States.

More comparisons: Atlanta vs Birmingham · Atlanta vs Augusta · Chattanooga vs Nashville · Chattanooga vs Knoxville/Maryville · Chattanooga vs Huntsville · all head-to-heads