Annapolis weather in August: Annapolis, Maryland: normal highs, lows, rain and records for August
Annapolis in August has a normal high of 84°F and a normal low of 71°F, a daily mean of 77°F, falling from 85°F on the 1st to 82°F by the 31st. The month brings 4.27 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 21°C, 108 mm of precipitation in August.
- NOAA stationAnnapolis Naf
- Station IDUSW00013752
- Location38.98°N 76.47°W
- Elevation8 ft (2 m)
- Population40,689
- Jan 43° 30°
- Feb 45° 32°
- Mar 53° 38°
- Apr 64° 47°
- May 73° 57°
- Jun 82° 68°
- Jul 86° 72°
- Aug 84° 71°
- Sep 77° 65°
- Oct 67° 52°
- Nov 56° 42°
- Dec 47° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Annapolis in August?
The normal high is 84°F and the normal low 71°F, for a daily mean of 77.1°F. August is 1.9°F cooler than July and 6.0°F warmer than September. August is the 2nd warmest month of the year in Annapolis and the 3rd wettest. Across the month the normal high falls 3°F, from 85°F on August 1 to 82°F on August 31. From one year to the next August's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 75°F and 79°F.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 85°F | 71°F | – | – |
| August 8 | 85°F | 71°F | – | – |
| August 15 | 84°F | 71°F | – | – |
| August 22 | 83°F | 70°F | – | – |
| August 31 | 82°F | 69°F | – | – |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 85°F | 71°F | – | – | 14 h 10 min |
| August 2 | 85°F | 71°F | – | – | 14 h 10 min |
| August 3 | 85°F | 71°F | – | – | 14 h 10 min |
| August 4 | 85°F | 71°F | – | – | 14 h 10 min |
| August 5 | 85°F | 71°F | – | – | 14 h 10 min |
| August 6 | 85°F | 71°F | – | – | 14 h |
| August 7 | 85°F | 71°F | – | – | 14 h |
| August 8 | 85°F | 71°F | – | – | 14 h |
| August 9 | 85°F | 71°F | – | – | 14 h |
| August 10 | 85°F | 71°F | – | – | 14 h |
| August 11 | 84°F | 71°F | – | – | 13 h 50 min |
| August 12 | 84°F | 71°F | – | – | 13 h 50 min |
| August 13 | 84°F | 71°F | – | – | 13 h 50 min |
| August 14 | 84°F | 71°F | – | – | 13 h 50 min |
| August 15 | 84°F | 71°F | – | – | 13 h 40 min |
| August 16 | 84°F | 71°F | – | – | 13 h 40 min |
| August 17 | 84°F | 71°F | – | – | 13 h 40 min |
| August 18 | 84°F | 71°F | – | – | 13 h 40 min |
| August 19 | 83°F | 70°F | – | – | 13 h 40 min |
| August 20 | 83°F | 70°F | – | – | 13 h 30 min |
| August 21 | 83°F | 70°F | – | – | 13 h 30 min |
| August 22 | 83°F | 70°F | – | – | 13 h 30 min |
| August 23 | 83°F | 70°F | – | – | 13 h 30 min |
| August 24 | 83°F | 70°F | – | – | 13 h 20 min |
| August 25 | 83°F | 70°F | – | – | 13 h 20 min |
| August 26 | 82°F | 70°F | – | – | 13 h 20 min |
| August 27 | 82°F | 70°F | – | – | 13 h 20 min |
| August 28 | 82°F | 70°F | – | – | 13 h 10 min |
| August 29 | 82°F | 69°F | – | – | 13 h 10 min |
| August 30 | 82°F | 69°F | – | – | 13 h 10 min |
| August 31 | 82°F | 69°F | – | – | 13 h 10 min |
- Normal high
- 84°FAugust average
- Normal low
- 71°FAugust average
- Precipitation
- 4.27 inmonth total
- Days at 90°F or more
- 5
- Daylight
- 14 h 10 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 26
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013752; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Annapolis in August?
In a normal August in Annapolis, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013752.
What are the records for August in Annapolis?
The warmest August temperature on Annapolis's official record (since 1894) is 106°F, on August 6, 1918; the coldest is 46°F, on August 30, 1986. The wettest August brought 14.30 in (1928).
The August mean against the 1991-2020 normal of 77.1°F: 2021 78.6°F (+1.5), 2022 79.0°F (+1.9), 2023 77.2°F (+0.1), 2024 76.2°F (−0.9), 2025 73.7°F (−3.4), 2026 78.6°F (+1.5). 4 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.6°F | +1.5°F | 7.34 in |
| 2022 | 79.0°F | +1.9°F | 3.52 in |
| 2023 | 77.2°F | +0.1°F | 3.14 in |
| 2024 | 76.2°F | −0.9°F | 7.46 in |
| 2025 | 73.7°F | −3.4°F | 0.86 in |
| 2026 | 78.6°F | +1.5°F | 4.35 in |
Source: records: ACIS, NWS threaded record NAKthr; recent months: ACIS, station USW00013752. Records and recent months use complete months only.
How does August in Annapolis compare across Maryland?
Across the 26 places PlainClimate covers in Maryland, August normal highs run from 78°F in Frostburg to 88°F in Vienna; Annapolis's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.