Augusta weather in May: Augusta, Maine: normal highs, lows, rain and records for May
Augusta in May has a normal high of 66°F and a normal low of 45°F, a daily mean of 55°F, rising from 61°F on the 1st to 70°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.27 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 7°C, 83 mm of precipitation in May.
- NOAA stationAugusta State Airport
- Station IDUSW00014605
- Location44.32°N 69.80°W
- Elevation350 ft (107 m)
- From the center3 miles
- Population19,168
- Jan 29° 12°
- Feb 32° 14°
- Mar 41° 23°
- Apr 54° 34°
- May 66° 45°
- Jun 74° 54°
- Jul 80° 60°
- Aug 79° 59°
- Sep 71° 51°
- Oct 58° 40°
- Nov 46° 30°
- Dec 35° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Augusta in May?
The normal high is 66°F and the normal low 45°F, for a daily mean of 55.3°F. May is 11.5°F warmer than April and 8.9°F cooler than June. May is the 5th warmest month of the year in Augusta and the 8th wettest. Across the month the normal high rises 9°F, from 61°F on May 1 to 70°F on May 31. From one year to the next May's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Mays in three average between 53°F and 58°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 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 61°F | 40°F | 41% | 24% |
| May 8 | 64°F | 42°F | 42% | 24% |
| May 15 | 66°F | 45°F | 43% | 24% |
| May 22 | 68°F | 47°F | 43% | 24% |
| May 31 | 70°F | 49°F | 42% | 24% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 61°F | 40°F | 41% | 24% | 14 h 10 min |
| May 2 | 61°F | 40°F | 41% | 24% | 14 h 10 min |
| May 3 | 62°F | 41°F | 41% | 24% | 14 h 20 min |
| May 4 | 62°F | 41°F | 41% | 24% | 14 h 20 min |
| May 5 | 62°F | 41°F | 41% | 24% | 14 h 20 min |
| May 6 | 63°F | 42°F | 42% | 24% | 14 h 20 min |
| May 7 | 63°F | 42°F | 42% | 24% | 14 h 30 min |
| May 8 | 64°F | 42°F | 42% | 24% | 14 h 30 min |
| May 9 | 64°F | 43°F | 42% | 24% | 14 h 30 min |
| May 10 | 64°F | 43°F | 42% | 24% | 14 h 30 min |
| May 11 | 65°F | 43°F | 42% | 24% | 14 h 40 min |
| May 12 | 65°F | 44°F | 42% | 24% | 14 h 40 min |
| May 13 | 65°F | 44°F | 42% | 24% | 14 h 40 min |
| May 14 | 65°F | 44°F | 42% | 24% | 14 h 40 min |
| May 15 | 66°F | 45°F | 43% | 24% | 14 h 40 min |
| May 16 | 66°F | 45°F | 43% | 24% | 14 h 50 min |
| May 17 | 66°F | 45°F | 43% | 24% | 14 h 50 min |
| May 18 | 67°F | 45°F | 43% | 24% | 14 h 50 min |
| May 19 | 67°F | 46°F | 43% | 24% | 14 h 50 min |
| May 20 | 67°F | 46°F | 43% | 24% | 15 h |
| May 21 | 67°F | 46°F | 43% | 24% | 15 h |
| May 22 | 68°F | 47°F | 43% | 24% | 15 h |
| May 23 | 68°F | 47°F | 42% | 24% | 15 h |
| May 24 | 68°F | 47°F | 42% | 24% | 15 h |
| May 25 | 69°F | 47°F | 42% | 24% | 15 h 10 min |
| May 26 | 69°F | 48°F | 42% | 24% | 15 h 10 min |
| May 27 | 69°F | 48°F | 42% | 24% | 15 h 10 min |
| May 28 | 69°F | 48°F | 42% | 24% | 15 h 10 min |
| May 29 | 70°F | 49°F | 42% | 24% | 15 h 10 min |
| May 30 | 70°F | 49°F | 42% | 24% | 15 h 10 min |
| May 31 | 70°F | 49°F | 42% | 24% | 15 h 10 min |
- Normal high
- 66°FMay average
- Normal low
- 45°FMay average
- Precipitation
- 3.27 inmonth total
- Days with precipitation
- 130.01 inch or more
- Daylight
- 14 h 10 min to 15 h 10 minMay 1 to May 31
- Days at 70°F or more
- 10
- Days at 80°F or more
- 3
- Sunshine
- 67%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014605; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Augusta in May?
On a given May day the chance of 0.01 inch or more is 42% on average, highest around May 18 (43%). In all, 3.27 in falls on 13 days of a normal May.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014605.
How humid and windy is Augusta in May?
At 3 p.m. the normal temperature is 67°F with 51% relative humidity and a dew point of 48°F; at 6 a.m. it is 53°F with 82% humidity. The wind averages 7.2 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 53°F | 48°F | 82% | 5.7 mph | – |
| 9 a.m. | 60°F | 48°F | 65% | 7.7 mph | – |
| noon | 65°F | 48°F | 53% | 8.8 mph | – |
| 3 p.m. | 67°F | 48°F | 51% | 9.5 mph | 42% |
| 6 p.m. | 63°F | 48°F | 59% | 8.6 mph | 50% |
| 9 p.m. | 57°F | 48°F | 73% | 6.3 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014605. 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 May in Augusta?
The warmest May temperature on this station's record (since 1948) is 94°F, on May 22, 1992; the coldest is 26°F, on May 8, 1950. The wettest May brought 10.83 in (1984); the snowiest, 6.1 inches (1963).
The May mean against the 1991-2020 normal of 55.3°F: 2021 56.3°F (+1.0), 2022 59.1°F (+3.8), 2023 57.2°F (+1.9), 2024 59.1°F (+3.8), 2025 56.9°F (+1.6), 2026 55.6°F (+0.3). 6 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.3°F | +1.0°F | 1.67 in |
| 2022 | 59.1°F | +3.8°F | 1.63 in |
| 2023 | 57.2°F | +1.9°F | 4.37 in |
| 2024 | 59.1°F | +3.8°F | 1.73 in |
| 2025 | 56.9°F | +1.6°F | 4.47 in |
| 2026 | 55.6°F | +0.3°F | 4.49 in |
Source: records: ACIS, station USW00014605; recent months: ACIS, station USW00014605. Records and recent months use complete months only.
How does May in Augusta compare across Maine?
Across the 42 places PlainClimate covers in Maine, May normal highs run from 60°F in Eastport to 68°F in Fryeburg; Augusta's is 66°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.