As of 10:48 PDT

Mill Plain, WA weather in May

59°

Mill Plain, Wednesday, 7 October, 10:48

Mostly clear. Feels like 59°. High 79°, low 50°.

Pressure30.06 inHg

Wind6.9 mph N

Humidity77%

Visibility1.2 mi

Dew point52°

See detailed hourly forecast

In May, Mill Plain, WA averages a high of 64.8° and a low of 46.6°. About 4.2 inches of precipitation fall over the month (13 wet days). The record high is 98.4° (1983) and the record low 31.3° (1964). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	62.4°	43.3°	37%	82.8° (2014)	34.3° (1988)
2	61.9°	44.6°	52%	81.3° (2016)	31.3° (1964)
3	62.1°	43.9°	47%	83.7° (1992)	34.5° (1963)
4	62.8°	44.1°	47%	87.6° (1966)	35.4° (2010)
5	62.6°	44.4°	45%	89.6° (1992)	33.3° (1965)
6	62.8°	45°	42%	90.1° (1987)	33.3° (1965)
7	63.5°	44.4°	40%	92.3° (1987)	33.1° (2002)
8	63.3°	44.4°	32%	88.3° (1987)	32.4° (1999)
9	63.1°	44.8°	32%	82.9° (1987)	34.3° (1999)
10	63.5°	45°	40%	84.4° (2024)	35.4° (1999)
11	64.2°	45.5°	40%	84.6° (1997)	36° (1985)
12	64.4°	45.7°	35%	83.7° (2023)	36.9° (1985)
13	65.5°	46°	40%	87.1° (2023)	35.4° (2022)
14	65.7°	47.5°	43%	88° (2023)	35.8° (1964)
15	65.3°	46.9°	45%	89.2° (2006)	35.4° (1974)
16	65.3°	47.1°	42%	88.5° (2008)	38.1° (1974)
17	64.8°	47.3°	37%	85.8° (2023)	36.5° (2003)
18	64.4°	47.3°	38%	81.3° (1963)	37° (2003)
19	64.6°	47.5°	45%	82° (1963)	35.4° (2003)
20	64.6°	47.1°	37%	86.2° (1963)	39.2° (1975)
21	65.1°	46.9°	42%	85.3° (1988)	37.6° (1960)
22	65.1°	47.3°	43%	88.5° (2017)	33.3° (1960)
23	65.3°	47.8°	40%	86° (1983)	35.1° (1964)
24	66.4°	48.2°	33%	91.4° (1992)	39.6° (1975)
25	66.7°	48.6°	43%	83.8° (1979)	35.1° (1964)
26	65.8°	49.3°	42%	82.2° (2005)	40.1° (2011)
27	66.2°	48.7°	38%	89.1° (1983)	41.7° (1966)
28	66.9°	49.3°	40%	98.4° (1983)	38.5° (1998)
29	66.7°	49.1°	43%	86.2° (1983)	40.1° (2021)
30	67.8°	48.4°	37%	92.8° (1986)	40.3° (2024)
31	68.7°	49.1°	33%	90.5° (1986)	41.4° (1966)