August
August · June · September
79climate match
United States · 1991–2020
Best time to visit
Juneau.
August leads for comfortable weather in Juneau: typically 26.4°C by day, 14.7°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortAugust
Typical high26.4°C
Typical low14.7°C
Rain in August94 mm
July
July · August · June
61climate match
May
May · September · October
77climate match
The weakest month is January, scoring 5 against August’s 79 — days reach only -3.3°C, 27° below the 24°C the score treats as ideal.
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
5-3.3° / -12.7°
Feb
5-1° / -11.2°
Mar
55.5° / -5°
Apr
2513° / 1.5°
May
5819.9° / 8°
Jun
7525.1° / 13.5°
Jul
7327.3° / 15.7°
Aug
7926.4° / 14.7°
Sep
7522.6° / 10.2°
Oct
4015.2° / 3.8°
Nov
76.9° / -2.6°
Dec
5-0.1° / -8.7°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -3.3°C | -12.7°C | 37 mm | 6.4 | 9 h 17 | 5 | Strong coverage |
| February | -1°C | -11.2°C | 34 mm | 5.9 | 10 h 26 | 5 | Strong coverage |
| March | 5.5°C | -5°C | 49 mm | 6.8 | 11 h 47 | 5 | Strong coverage |
| April | 13°C | 1.5°C | 95 mm | 9.1 | 13 h 21 | 25 | Strong coverage |
| May | 19.9°C | 8°C | 99 mm | 10.1 | 14 h 40 | 58 | Strong coverage |
| June | 25.1°C | 13.5°C | 127 mm | 9.3 | 15 h 23 | 75 | Strong coverage |
| July | 27.3°C | 15.7°C | 107 mm | 8.7 | 15 h 06 | 73 | Strong coverage |
| August | 26.4°C | 14.7°C | 94 mm | 7.7 | 13 h 58 | 79 | Strong coverage |
| September | 22.6°C | 10.2°C | 87 mm | 7.5 | 12 h 27 | 75 | Strong coverage |
| October | 15.2°C | 3.8°C | 77 mm | 8.2 | 10 h 57 | 40 | Strong coverage |
| November | 6.9°C | -2.6°C | 49 mm | 6.5 | 9 h 37 | 7 | Strong coverage |
| December | -0.1°C | -8.7°C | 42 mm | 6.8 | 8 h 58 | 5 | Strong coverage |
What has changed
Juneau runs -0.0°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+0.4
Feb
-0.1
Mar
+0.5
Apr
-1.6
May
-1.1
Jun
-0.5
Jul
-0.8
Aug
-0.2
Sep
+0.8
Oct
+0.3
Nov
+0.2
Dec
+1.7
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 12.8°C31 Jan 2025 | -37.8°C18 Jan 1994 | 31 mm29 Jan 2006 | 75 mm2005 · driest 1 mm in 2025 | 56 |
| February | 21.1°C28 Feb 2024 | -35.0°C1 Feb 2019 | 30 mm27 Feb 2009 | 78 mm2008 · driest 1 mm in 1995 | 56 |
| March | 28.3°C22 Mar 2012 | -26.1°C3 Mar 2014 | 78 mm31 Mar 1998 | 133 mm1976 · driest 4 mm in 1978 | 56 |
| April | 31.7°C23 Apr 1980 | -12.8°C7 Apr 1982 | 73 mm4 Apr 2011 | 198 mm2026 · driest 11 mm in 2005 | 56 |
| May | 33.9°C28 May 1978 | -5.6°C18 May 2002 | 89 mm13 May 1978 | 236 mm2004 · driest 15 mm in 1992 | 56 |
| June | 37.2°C20 Jun 1988 | -1.1°C15 Jun 1999 | 102 mm9 Jun 2008 | 295 mm2008 · driest 12 mm in 2012 | 56 |
| July | 38.9°C6 Jul 2012 | 5.6°C5 Jul 1972 | 151 mm21 Jul 1999 | 279 mm1999 · driest 33 mm in 1998 | 55 |
| August | 37.8°C17 Aug 1988 | 3.3°C27 Aug 1986 | 83 mm9 Aug 1995 | 292 mm2007 · driest 22 mm in 2013 | 55 |
| September | 35.0°C9 Sep 1978 | -4.4°C29 Sep 1993 | 147 mm10 Sep 1986 | 374 mm1986 · driest 5 mm in 1979 | 55 |
| October | 30.6°C4 Oct 2025 | -10.0°C30 Oct 1988 | 142 mm2 Oct 2019 | 221 mm2019 · driest 18 mm in 1994 | 55 |
| November | 23.3°C4 Nov 2015 | -23.3°C29 Nov 1976 | 71 mm4 Nov 2003 | 152 mm2003 · driest 5 mm in 1976 | 56 |
| December | 18.9°C6 Dec 2001 | -31.7°C24 Dec 1983 | 42 mm20 Dec 1991 | 110 mm2015 · driest 5 mm in 1993 | 56 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | 1 | 6 |
| February | 0 | 0 | 27 | <1 | 6 |
| March | <1 | 0 | 25 | 1 | 3 |
| April | 1 | <1 | 12 | 3 | <1 |
| May | 7 | 1 | 1 | 4 | 0 |
| June | 17 | 4 | 0 | 4 | 0 |
| July | 24 | 7 | 0 | 3 | 0 |
| August | 22 | 5 | 0 | 3 | 0 |
| September | 11 | 2 | <1 | 3 | 0 |
| October | 2 | <1 | 8 | 3 | <1 |
| November | 0 | 0 | 21 | 2 | 2 |
| December | 0 | 0 | 29 | 1 | 6 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 19% | 3% | 16% | -6.7–-0.3°C |
| February | 0% | 19% | 3% | 17% | -5.2–3.1°C |
| March | 2% | 22% | 6% | 25% | 2.8–8.9°C |
| April | 13% | 30% | 10% | 36% | 10.4–16.0°C |
| May | 40% | 29% | 10% | 33% | 17.7–22.9°C |
| June | 66% | 29% | 12% | 34% | 23.6–27.8°C |
| July | 73% | 26% | 10% | 27% | 25.7–29.6°C |
| August | 72% | 26% | 11% | 26% | 24.7–28.3°C |
| September | 56% | 25% | 10% | 31% | 20.5–25.2°C |
| October | 18% | 26% | 8% | 27% | 12.4–18.1°C |
| November | 2% | 22% | 5% | 22% | 3.7–10.3°C |
| December | 0% | 22% | 4% | 18% | -3.9–3.1°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.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5258190
- NOAA station
- USC00473756 · HORICON WWTP
- Station distance
- 7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 43.41°, 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.