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The weather in Juneau in May is very cold with temperatures between 0°C and 9°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Juneau. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
You can expect a few days of snow in Juneau during May. It’s important to get out your snow boots and warm mittens to stay warm while you explore Juneau.
Our weather forecast can give you a great sense of what weather to expect in Juneau in May 2025.
If you’re planning to visit Juneau in the near future, we highly recommend that you review the 14 day weather forecast for Juneau before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -10° | 8 | 3 | 23 | 531 mm | Awful | Juneau in January |
| February | -4° / -10° | 5 | 6 | 20 | 341 mm | Awful | Juneau in February |
| March | -1° / -9° | 5 | 5 | 22 | 328 mm | Awful | Juneau in March |
| April | 3° / -5° | 11 | 5 | 16 | 296 mm | Awful | Juneau in April |
| May | 9° / 0° | 12 | 15 | 4 | 242 mm | Awful | Juneau in May |
| June | 12° / 3° | 14 | 16 | 0 | 263 mm | Bad | Juneau in June |
| July | 14° / 5° | 12 | 19 | 0 | 258 mm | Ok | Juneau in July |
| August | 13° / 5° | 16 | 15 | 0 | 434 mm | Bad | Juneau in August |
| September | 10° / 3° | 17 | 13 | 0 | 475 mm | Bad | Juneau in September |
| October | 4° / -1° | 16 | 8 | 7 | 506 mm | Awful | Juneau in October |
| November | -2° / -6° | 9 | 2 | 21 | 493 mm | Awful | Juneau in November |
| December | -4° / -10° | 6 | 4 | 23 | 469 mm | Awful | Juneau in December |