Watertown weather in May: Watertown, New York: normal highs, lows, rain and records for May
Watertown in May has a normal high of 66°F and a normal low of 44°F, a daily mean of 55°F, rising from 61°F on the 1st to 71°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 2.97 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 7°C, 75 mm of precipitation in May.
- NOAA stationWatertown International Airport
- Station IDUSW00094790
- Location43.99°N 76.02°W
- Elevation318 ft (97 m)
- From the center6 miles
- Population24,038
- Jan 30° 10°
- Feb 31° 11°
- Mar 40° 21°
- Apr 54° 33°
- May 66° 44°
- Jun 75° 53°
- Jul 79° 59°
- Aug 78° 57°
- Sep 71° 49°
- Oct 58° 39°
- Nov 47° 30°
- Dec 36° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Watertown in May?
The normal high is 66°F and the normal low 44°F, for a daily mean of 55.0°F. May is 11.9°F warmer than April and 8.8°F cooler than June. May is the 5th warmest month of the year in Watertown and the 9th wettest. Across the month the normal high rises 10°F, from 61°F on May 1 to 71°F on May 31. From one year to the next May's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Mays in three average between 52°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 | 39°F | 43% | 25% |
| May 8 | 64°F | 41°F | 43% | 25% |
| May 15 | 66°F | 44°F | 42% | 25% |
| May 22 | 68°F | 46°F | 41% | 25% |
| May 31 | 71°F | 49°F | 41% | 25% |
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 | 39°F | 43% | 25% | 14 h 10 min |
| May 2 | 62°F | 39°F | 43% | 25% | 14 h 10 min |
| May 3 | 62°F | 39°F | 43% | 25% | 14 h 10 min |
| May 4 | 62°F | 40°F | 43% | 25% | 14 h 20 min |
| May 5 | 63°F | 40°F | 43% | 25% | 14 h 20 min |
| May 6 | 63°F | 40°F | 43% | 25% | 14 h 20 min |
| May 7 | 64°F | 41°F | 43% | 25% | 14 h 20 min |
| May 8 | 64°F | 41°F | 43% | 25% | 14 h 30 min |
| May 9 | 64°F | 41°F | 43% | 25% | 14 h 30 min |
| May 10 | 65°F | 42°F | 42% | 25% | 14 h 30 min |
| May 11 | 65°F | 42°F | 42% | 25% | 14 h 30 min |
| May 12 | 65°F | 42°F | 42% | 25% | 14 h 40 min |
| May 13 | 66°F | 43°F | 42% | 25% | 14 h 40 min |
| May 14 | 66°F | 43°F | 42% | 25% | 14 h 40 min |
| May 15 | 66°F | 44°F | 42% | 25% | 14 h 40 min |
| May 16 | 66°F | 44°F | 42% | 25% | 14 h 40 min |
| May 17 | 67°F | 44°F | 42% | 25% | 14 h 50 min |
| May 18 | 67°F | 45°F | 42% | 25% | 14 h 50 min |
| May 19 | 67°F | 45°F | 42% | 25% | 14 h 50 min |
| May 20 | 68°F | 45°F | 41% | 25% | 14 h 50 min |
| May 21 | 68°F | 45°F | 41% | 25% | 15 h |
| May 22 | 68°F | 46°F | 41% | 25% | 15 h |
| May 23 | 68°F | 46°F | 41% | 25% | 15 h |
| May 24 | 69°F | 46°F | 41% | 25% | 15 h |
| May 25 | 69°F | 47°F | 41% | 25% | 15 h |
| May 26 | 69°F | 47°F | 41% | 25% | 15 h |
| May 27 | 69°F | 47°F | 41% | 25% | 15 h 10 min |
| May 28 | 70°F | 48°F | 41% | 25% | 15 h 10 min |
| May 29 | 70°F | 48°F | 41% | 25% | 15 h 10 min |
| May 30 | 70°F | 48°F | 41% | 25% | 15 h 10 min |
| May 31 | 71°F | 49°F | 41% | 25% | 15 h 10 min |
- Normal high
- 66°FMay average
- Normal low
- 44°FMay average
- Precipitation
- 2.97 inmonth total
- Days with precipitation
- 130.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 14 h 10 min to 15 h 10 minMay 1 to May 31
- Days at 70°F or more
- 13
- Days at 80°F or more
- 3
- Sunshine
- 71%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094790; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Watertown in May?
On a given May day the chance of 0.01 inch or more is 42% on average, highest around May 1 (43%). In all, 2.97 in falls on 13 days of a normal May.
In a normal May in Watertown, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094790.
How humid and windy is Watertown in May?
At 3 p.m. the normal temperature is 68°F with 58% relative humidity and a dew point of 52°F; at 6 a.m. it is 56°F with 84% humidity. The wind averages 7.2 mph, most often from the west-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 56°F | 51°F | 84% | 5.3 mph | – |
| 9 a.m. | 63°F | 52°F | 66% | 8.5 mph | – |
| noon | 67°F | 52°F | 60% | 10.4 mph | – |
| 3 p.m. | 68°F | 52°F | 58% | 10.5 mph | – |
| 6 p.m. | 65°F | 52°F | 61% | 8.0 mph | 57% |
| 9 p.m. | 58°F | 52°F | 80% | 4.8 mph | 58% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094790. 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 Watertown?
The warmest May temperature on this station's record (since 1949) is 91°F, on May 30, 2018; the coldest is 18°F, on May 7, 1966. The wettest May brought 5.63 in (2003); the snowiest, 1.1 inches (1963).
The May mean against the 1991-2020 normal of 55.0°F: 2021 54.1°F (−0.9), 2022 58.2°F (+3.2), 2023 53.0°F (−2.0), 2024 61.0°F (+6.0), 2025 55.3°F (+0.3), 2026 53.2°F (−1.8). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.1°F | −0.9°F | 0.83 in |
| 2022 | 58.2°F | +3.2°F | 4.42 in |
| 2023 | 53.0°F | −2.0°F | 1.70 in |
| 2024 | 61.0°F | +6.0°F | 3.20 in |
| 2025 | 55.3°F | +0.3°F | 4.40 in |
| 2026 | 53.2°F | −1.8°F | 3.32 in |
Source: records: ACIS, station USW00094790; recent months: ACIS, station USW00094790. Records and recent months use complete months only.
How does May in Watertown compare across New York?
Across the 131 places PlainClimate covers in New York, May normal highs run from 60°F in Cooperstown to 74°F in Hudson; Watertown's is 66°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.