Chattanooga weather by month & the best time to visit
United States · regional city · humid subtropical climate
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The best time to visit Chattanooga is October — its sunniest month (Sunshine Score 76/100), with June and September close behind. Chattanooga averages about 2,300 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 89 mm of rain in October.
When is the best time to visit Chattanooga?
For sunshine, the best time to visit Chattanooga is October, then June and September. The dullest month is January (6/100, 109 mm of rain). The full month-by-month picture is in the table below.
How sunny is Chattanooga?
Chattanooga gets a moderate 2,300 hours of sunshine a year. 70 Sunshine Score points separate October (76) from January (6), so the month you pick matters. It ranks #277 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 1,354 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 6 | 9° / 48°F | -1° / 30°F | 109 mm | 2 |
| February | 23 | 12° / 54°F | 1° / 34°F | 122 mm | 3 |
| March | 53 | 17° / 63°F | 5° / 41°F | 118 mm | 5 |
| April | 71 | 22° / 72°F | 10° / 50°F | 115 mm | 6 |
| May | 71 | 26° / 79°F | 15° / 59°F | 115 mm | 7 |
| June | 73 | 31° / 88°F | 19° / 66°F | 106 mm | 8 |
| July | 62 | 33° / 91°F | 21° / 70°F | 127 mm | 8 |
| August | 67 | 33° / 91°F | 21° / 70°F | 96 mm | 7 |
| September | 72 | 30° / 86°F | 17° / 63°F | 108 mm | 6 |
| October | 76 | 23° / 73°F | 10° / 50°F | 89 mm | 5 |
| November | 48 | 16° / 61°F | 4° / 39°F | 109 mm | 3 |
| December | 17 | 11° / 52°F | 1° / 34°F | 140 mm | 2 |
Nearest destinations
Head-to-head
How Chattanooga compares month by month: Chattanooga vs Atlanta · Chattanooga vs Nashville · Chattanooga vs Knoxville/Maryville · Chattanooga vs Huntsville · all comparisons
Chattanooga: questions and answers
What kind of destination is Chattanooga?
Chattanooga is a regional city in United States with a humid subtropical climate.
How many hours of sunshine does Chattanooga get a year?
Chattanooga gets about 2,300 hours of sunshine a year, at its best around October.
When is the best time to visit Chattanooga?
The sunniest time to visit Chattanooga is October, when the Sunshine Score peaks at 76/100 (with June and September close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Chattanooga?
January is the least sunny month in Chattanooga, scoring 6/100 with about 109 mm of rain.
How strong is the sun in Chattanooga?
The typical midday UV index in Chattanooga peaks around 8 (very high) in June, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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