Lewiston, ME weather in August
In August, Lewiston sees highs around 78°F and lows around 54°F: mild, with frequent rain. There are about 11 days with rain. It is one of the warmest months in Lewiston. Good for outdoor plans.
- Normal high
- 78°F
- Normal low
- 54°F
- Wet days
- 11
- 3.6 in total
- Muggy days
- 5
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 79°F | 75°F |
| Normal low | 56°F | 51°F |
| Chance of a wet day | 38% | 33% |
| Sunrise / sunset | 5:28 am / 8:05 pm | 6:03 am / 7:19 pm |
| Daylight | 14.6 h | 13.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical August day
- 6 am62°Fdew point 58°F
- 9 am70°Fdew point 59°F
- Noon75°Fdew point 58°F
- 3 pm76°Fdew point 58°F
- 6 pm72°Fdew point 58°F
- 9 pm66°Fdew point 59°F
NOAA hourly normals (local standard time) from Augusta State Airport (26 mi away); average wind 6 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F12 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more5 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 3.6 in; a dry August brings about 2.3 in and a wet one about 3.9 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202002: average high 84°F
- Coolest August2008: average high 72°F
- Wettest August2008: 9.2 in
- Driest August2001: 0.4 in
- Highest reading97°F (August 10, 2001)
- Lowest reading37°F (August 20, 2007)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 79°F | 78°F | 70°F |
| Normal low | 56°F | 54°F | 47°F |
| Wet days | 12 | 11 | 10 |
| Comfortable days | 10 | 12 | 17 |
| Daylight | 15.1 h | 14.0 h | 12.5 h |
Highs change by -1°F from July and -8°F into September.
Nearby alternatives in August
- Warmer: Lowell, MA115 mi · high 83°F · 10 wet days
- Cooler: Lake Placid, NY187 mi · high 73°F · 13 wet days
How Lewiston ranks in August
- Normal high336th warmest of 378 cities; 4th of 5 in Maine
- Wet days302nd driest of 378
- Comfortable days52nd most of 341
What to pack for Lewiston in August
- A rain jacket or umbrella – rain on about 11 days
Heating and cooling
August has 51 heating degree days and 79 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Lewiston in August?
The normal high is 78°F and the normal low is 54°F. From 1991 to 2020 the hottest August reading was 97°F (August 10, 2001).
Does it rain a lot in Lewiston in August?
About 11 days in August have at least 0.01 in of precipitation, and the normal total is 3.7 in. The wettest August in 1991-2020 was in 2008 (9.2 in); the driest was in 2001 (0.4 in).
Is August a good time to visit Lewiston?
August ranks 4th of 12 months on our comfort score for Lewiston (67 out of 100). It has about 12 comfortable days and about 1 day at 90°F or hotter. The best months are May, June and September.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Durham (USC00172048), 9.1 mi SE of the city center, 140 ft (78 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Lewiston (USC00174566), 0.1 mi WSW of the city center, 180 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Augusta State Airport (USW00014605), 26 mi NE of the city center, 350 ft (132 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Augusta State Airport (726185-14605), 26 mi NE of the city center, 349 ft (131 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).