Sitka weather in August: Sitka, Alaska: normal highs, lows, rain and records for August
Sitka in August has a normal high of 62°F and a normal low of 53°F, a daily mean of 57°F, holding near 62°F all month. Measurable precipitation falls on 19 days in a normal August, 7.25 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 17°C and low of 12°C, 184 mm of precipitation in August.
- NOAA stationSitka Airport
- Station IDUSW00025333
- Location57.05°N 135.36°W
- Elevation14 ft (4 m)
- Population8,355
- Jan 41° 32°
- Feb 41° 32°
- Mar 43° 33°
- Apr 48° 37°
- May 53° 43°
- Jun 58° 48°
- Jul 60° 53°
- Aug 62° 53°
- Sep 58° 49°
- Oct 51° 42°
- Nov 44° 36°
- Dec 42° 33°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sitka in August?
The normal high is 62°F and the normal low 53°F, for a daily mean of 57.3°F. August is 0.8°F warmer than July and 4.1°F warmer than September. August is the warmest month of the year in Sitka and the 6th wettest. Across the month the normal high falls 1°F, from 62°F on August 1 to 61°F on August 31. From one year to the next August's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 56°F and 59°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 71%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 62°F | 54°F | 60% | 37% |
| August 8 | 62°F | 54°F | 61% | 40% |
| August 15 | 62°F | 53°F | 64% | 43% |
| August 22 | 62°F | 53°F | 67% | 47% |
| August 31 | 61°F | 51°F | 71% | 52% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 8, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 62°F | 54°F | 60% | 37% | 16 h 20 min |
| August 2 | 62°F | 54°F | 60% | 38% | 16 h 20 min |
| August 3 | 62°F | 54°F | 60% | 38% | 16 h 10 min |
| August 4 | 62°F | 54°F | 60% | 38% | 16 h 10 min |
| August 5 | 62°F | 54°F | 61% | 39% | 16 h |
| August 6 | 62°F | 54°F | 61% | 39% | 16 h |
| August 7 | 62°F | 54°F | 61% | 39% | 15 h 50 min |
| August 8 | 62°F | 54°F | 61% | 40% | 15 h 50 min |
| August 9 | 62°F | 54°F | 62% | 40% | 15 h 50 min |
| August 10 | 62°F | 54°F | 62% | 41% | 15 h 40 min |
| August 11 | 62°F | 54°F | 62% | 41% | 15 h 40 min |
| August 12 | 62°F | 54°F | 63% | 42% | 15 h 30 min |
| August 13 | 62°F | 53°F | 63% | 42% | 15 h 30 min |
| August 14 | 62°F | 53°F | 64% | 43% | 15 h 20 min |
| August 15 | 62°F | 53°F | 64% | 43% | 15 h 20 min |
| August 16 | 62°F | 53°F | 65% | 44% | 15 h 10 min |
| August 17 | 62°F | 53°F | 65% | 44% | 15 h 10 min |
| August 18 | 62°F | 53°F | 65% | 45% | 15 h 10 min |
| August 19 | 62°F | 53°F | 66% | 45% | 15 h |
| August 20 | 62°F | 53°F | 66% | 46% | 15 h |
| August 21 | 62°F | 53°F | 67% | 47% | 14 h 50 min |
| August 22 | 62°F | 53°F | 67% | 47% | 14 h 50 min |
| August 23 | 62°F | 52°F | 67% | 48% | 14 h 40 min |
| August 24 | 62°F | 52°F | 68% | 48% | 14 h 40 min |
| August 25 | 61°F | 52°F | 68% | 49% | 14 h 30 min |
| August 26 | 61°F | 52°F | 69% | 50% | 14 h 30 min |
| August 27 | 61°F | 52°F | 69% | 50% | 14 h 20 min |
| August 28 | 61°F | 52°F | 69% | 51% | 14 h 20 min |
| August 29 | 61°F | 52°F | 70% | 51% | 14 h 10 min |
| August 30 | 61°F | 51°F | 70% | 52% | 14 h 10 min |
| August 31 | 61°F | 51°F | 71% | 52% | 14 h 10 min |
- Normal high
- 62°FAugust average
- Normal low
- 53°FAugust average
- Precipitation
- 7.25 inmonth total
- Days with precipitation
- 190.01 inch or more
- Daylight
- 16 h 20 min to 14 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 2
- Sunshine
- 54%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00025333; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sitka in August?
On a given August day the chance of 0.01 inch or more is 65% on average, highest around August 31 (71%). In all, 7.25 in falls on 19 days of a normal August, 2 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00025333.
How humid and windy is Sitka in August?
At 3 p.m. the normal temperature is 58°F with 78% relative humidity and a dew point of 52°F; at 6 a.m. it is 53°F with 90% humidity. The wind averages 6.1 mph, most often from the south-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 53°F | 50°F | 90% | 5.0 mph | – |
| 9 a.m. | 56°F | 51°F | 84% | 5.5 mph | – |
| noon | 58°F | 51°F | 79% | 7.6 mph | – |
| 3 p.m. | 58°F | 52°F | 78% | 7.8 mph | – |
| 6 p.m. | 57°F | 51°F | 80% | 7.2 mph | – |
| 9 p.m. | 55°F | 51°F | 87% | 5.7 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00025333. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Sitka?
The warmest August temperature on this station's record (since 1944) is 84°F, on August 18, 1950; the coldest is 37°F, on August 25, 1948. The wettest August brought 19.51 in (1961).
The August mean against the 1991-2020 normal of 57.3°F: 2021 58.5°F (+1.2), 2022 59.2°F (+1.9), 2023 60.6°F (+3.3), 2024 58.7°F (+1.4), 2026 58.3°F (+1.0). 5 of 5 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.5°F | +1.2°F | 9.30 in |
| 2022 | 59.2°F | +1.9°F | 9.55 in |
| 2023 | 60.6°F | +3.3°F | 8.27 in |
| 2024 | 58.7°F | +1.4°F | 7.25 in |
| 2026 | 58.3°F | +1.0°F | 6.14 in |
Source: records: ACIS, station USW00025333; recent months: ACIS, station USW00025333. Records and recent months use complete months only.
How does August in Sitka compare across Alaska?
Across the 85 places PlainClimate covers in Alaska, August normal highs run from 45°F in Utqiaġvik to 68°F in Two Rivers; Sitka's is 62°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.