Kennewick weather in May: Kennewick, Washington: normal highs, lows, rain and records for May
Kennewick in May has a normal high of 75°F and a normal low of 50°F, a daily mean of 63°F, rising from 71°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 6 days in a normal May, 0.84 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 10°C, 21 mm of precipitation in May.
- NOAA stationKennewick
- Station IDUSC00454154
- Location46.21°N 119.10°W
- Elevation390 ft (119 m)
- From the center4 miles
- Population86,728
- Jan 42° 29°
- Feb 48° 31°
- Mar 58° 36°
- Apr 66° 42°
- May 75° 50°
- Jun 82° 56°
- Jul 91° 62°
- Aug 90° 61°
- Sep 81° 53°
- Oct 66° 43°
- Nov 51° 35°
- Dec 42° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Kennewick in May?
The normal high is 75°F and the normal low 50°F, for a daily mean of 62.7°F. May is 8.4°F warmer than April and 6.5°F cooler than June. May is the 5th warmest month of the year in Kennewick and the 4th wettest. Across the month the normal high rises 8°F, from 71°F on May 1 to 79°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 60°F and 65°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 21%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 71°F | 46°F | 20% | 7% |
| May 8 | 73°F | 48°F | 20% | 7% |
| May 15 | 75°F | 50°F | 21% | 8% |
| May 22 | 77°F | 52°F | 20% | 8% |
| May 31 | 79°F | 54°F | 19% | 8% |
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 | 71°F | 46°F | 20% | 7% | 14 h 20 min |
| May 2 | 71°F | 46°F | 20% | 7% | 14 h 20 min |
| May 3 | 72°F | 47°F | 20% | 7% | 14 h 20 min |
| May 4 | 72°F | 47°F | 20% | 7% | 14 h 30 min |
| May 5 | 72°F | 47°F | 20% | 7% | 14 h 30 min |
| May 6 | 73°F | 47°F | 20% | 7% | 14 h 30 min |
| May 7 | 73°F | 48°F | 20% | 7% | 14 h 40 min |
| May 8 | 73°F | 48°F | 20% | 7% | 14 h 40 min |
| May 9 | 74°F | 48°F | 20% | 7% | 14 h 40 min |
| May 10 | 74°F | 49°F | 20% | 7% | 14 h 40 min |
| May 11 | 74°F | 49°F | 20% | 7% | 14 h 50 min |
| May 12 | 75°F | 49°F | 20% | 7% | 14 h 50 min |
| May 13 | 75°F | 49°F | 20% | 8% | 14 h 50 min |
| May 14 | 75°F | 50°F | 21% | 8% | 14 h 50 min |
| May 15 | 75°F | 50°F | 21% | 8% | 15 h |
| May 16 | 76°F | 50°F | 21% | 8% | 15 h |
| May 17 | 76°F | 51°F | 21% | 8% | 15 h |
| May 18 | 76°F | 51°F | 21% | 8% | 15 h |
| May 19 | 76°F | 51°F | 21% | 8% | 15 h 10 min |
| May 20 | 77°F | 51°F | 21% | 8% | 15 h 10 min |
| May 21 | 77°F | 52°F | 21% | 8% | 15 h 10 min |
| May 22 | 77°F | 52°F | 20% | 8% | 15 h 10 min |
| May 23 | 77°F | 52°F | 20% | 8% | 15 h 10 min |
| May 24 | 77°F | 52°F | 20% | 8% | 15 h 20 min |
| May 25 | 78°F | 53°F | 20% | 8% | 15 h 20 min |
| May 26 | 78°F | 53°F | 20% | 8% | 15 h 20 min |
| May 27 | 78°F | 53°F | 20% | 8% | 15 h 20 min |
| May 28 | 78°F | 53°F | 20% | 8% | 15 h 20 min |
| May 29 | 78°F | 53°F | 20% | 8% | 15 h 30 min |
| May 30 | 78°F | 54°F | 19% | 8% | 15 h 30 min |
| May 31 | 79°F | 54°F | 19% | 8% | 15 h 30 min |
- Normal high
- 75°FMay average
- Normal low
- 50°FMay average
- Precipitation
- 0.84 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 14 h 20 min to 15 h 30 minMay 1 to May 31
- Days at 70°F or more
- 23
- Days at 80°F or more
- 9
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00454154; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Kennewick in May?
On a given May day the chance of 0.01 inch or more is 20% on average, highest around May 16 (21%). In all, 0.84 in falls on 6 days of a normal May.
In a normal May in Kennewick, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00454154.
What are the records for May in Kennewick?
The warmest May temperature on this station's record (since 1894) is 104°F, on May 31, 1910; the coldest is 26°F, on May 1, 1905. The wettest May brought 3.30 in (2019).
The May mean against the 1991-2020 normal of 62.7°F: 2021 63.6°F (+0.9), 2022 58.6°F (−4.1), 2023 68.1°F (+5.4), 2024 62.0°F (−0.7), 2025 63.6°F (+0.9), 2026 66.7°F (+4.0). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.6°F | +0.9°F | 0.04 in |
| 2022 | 58.6°F | −4.1°F | 1.70 in |
| 2023 | 68.1°F | +5.4°F | 0.08 in |
| 2024 | 62.0°F | −0.7°F | 0.85 in |
| 2025 | 63.6°F | +0.9°F | 1.37 in |
| 2026 | 66.7°F | +4.0°F | 0.09 in |
Source: records: ACIS, station USC00454154; recent months: ACIS, station USC00454154. Records and recent months use complete months only.
How does May in Kennewick compare across Washington?
Across the 96 places PlainClimate covers in Washington, May normal highs run from 59°F in Long Beach to 77°F in Pasco; Kennewick's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.