Monthly outlook for Humphrey, WA: average high 72.6°, average low 55.4°. That is 0.8° below the climate normal for August. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 14 August (80.7°), the coolest 10 August (49.3°).
72.6°/55.4°
Average high / low
−0.8°
Below normal
5 / 4
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
75.9°
74.8°
+0.6°
19 August – 28 August
67°
72.8°
-3.2°
29 August – 7 September
at normal
71.3°
—
August records over 66 years
96.4°25 August 1996All-time high
38.7°29 August 1980All-time low
Climate normals and records are computed from the nearest reference point — Greenwater (7 mi).
Mon, 1076° / 49°0
76 °
Humphrey, Monday, 10 August
Clear. High 76°, low 49°.
Pressure30.06 inHg
Wind6.3 mph NW
Humidity50%
Visibility6.2 mi
Dew point49°
Tue, 1179° / 53°0
79 °
Humphrey, Tuesday, 11 August
Clear. High 79°, low 53°.
Pressure30.09 inHg
Wind6.8 mph NW
Humidity43%
Visibility6.2 mi
Dew point47°
Wed, 1277° / 54°0
77 °
Humphrey, Wednesday, 12 August
Clear. High 77°, low 54°.
Pressure29.97 inHg
Wind6.4 mph NW
Humidity49%
Visibility6.2 mi
Dew point50°
Thu, 1381° / 55°0
81 °
Humphrey, Thursday, 13 August
Clear. High 81°, low 55°.
Pressure29.85 inHg
Wind7 mph NW
Humidity41%
Visibility—
Dew point52°
Fri, 1481° / 58°0
81 °
Humphrey, Friday, 14 August
Overcast. High 81°, low 58°.
Pressure29.94 inHg
Wind7.1 mph W
Humidity39%
Visibility—
Dew point52°
Sat, 1581° / 58°0
81 °
Humphrey, Saturday, 15 August
Clear. High 81°, low 58°.
Pressure29.97 inHg
Wind7 mph W
Humidity43%
Visibility—
Dew point54°
Sun, 1677° / 57°0
77 °
Humphrey, Sunday, 16 August
Overcast. High 77°, low 57°.
Pressure29.97 inHg
Wind7.2 mph NW
Humidity41%
Visibility—
Dew point50°
Mon, 1759° / 56°0.48
59 °
Humphrey, Monday, 17 August
Light rain. High 59°, low 56°.
Pressure30.00 inHg
Wind5.1 mph E
Humidity98%
Visibility—
Dew point58°
Tue, 1872° / 55°0.01
72 °
Humphrey, Tuesday, 18 August
Light rain. High 72°, low 55°.
Pressure29.97 inHg
Wind5.9 mph W
Humidity48%
Visibility—
Dew point49°
Wed, 1974° / 56°0
74 °
Humphrey, Wednesday, 19 August
Overcast. High 74°, low 56°.
Pressure30.00 inHg
Wind5.1 mph NW
Humidity61%
Visibility—
Dew point55°
Thu, 2076° / 60°0.36
76 °
Humphrey, Thursday, 20 August
Rain. High 76°, low 60°.
Pressure29.91 inHg
Wind6.2 mph W
Humidity59%
Visibility—
Dew point59°
Fri, 2167° / 57°0.09
67 °
Humphrey, Friday, 21 August
Light rain. High 67°, low 57°.
Pressure29.94 inHg
Wind6.2 mph W
Humidity72%
Visibility—
Dew point57°
Sat, 2261° / 57°0.41
61 °
Humphrey, Saturday, 22 August
Light rain. High 61°, low 57°.
Pressure30.03 inHg
Wind4.2 mph W
Humidity99%
Visibility—
Dew point59°
Sun, 2366° / 55°0
66 °
Humphrey, Sunday, 23 August
Overcast. High 66°, low 55°.
Pressure30.09 inHg
Wind5.5 mph NW
Humidity67%
Visibility—
Dew point52°
Mon, 2457° / 54°0.72
57 °
Humphrey, Monday, 24 August
Rain. High 57°, low 54°.
Pressure29.88 inHg
Wind4.1 mph NW
Humidity99%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2573° / 51°0.1
73 °
Humphrey, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.1 in
Chance of precipitation23%
Record high96° (1996)
Record low42° (1973)
Wed, 2674° / 52°0.06
74 °
Humphrey, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.06 in
Chance of precipitation33%
Record high92° (1986)
Record low43° (1993)
Thu, 2773° / 53°0.11
73 °
Humphrey, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (1986)
Record low45° (1995)
Fri, 2874° / 52°0.06
74 °
Humphrey, Friday, 28 August
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.06 in
Chance of precipitation23%
Record high93° (2017)
Record low39° (2024)
Sat, 2973° / 53°0.1
73 °
Humphrey, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.1 in
Chance of precipitation35%
Record high92° (1967)
Record low39° (1980)
Sun, 3071° / 53°0.13
71 °
Humphrey, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.13 in
Chance of precipitation43%
Record high93° (1967)
Record low41° (1965)
Mon, 3171° / 52°0.07
71 °
Humphrey, Monday, 31 August
Climate normal for this date — 60-year average.
Average high71°
Average low52°
Average precipitation0.07 in
Chance of precipitation40%
Record high94° (1987)
Record low41° (1964)
Tue, 0171° / 52°0.14
71 °
Humphrey, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low52°
Average precipitation0.14 in
Chance of precipitation32%
Record high90° (1988)
Record low39° (1973)
Wed, 0272° / 52°0.11
72 °
Humphrey, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high72°
Average low52°
Average precipitation0.11 in
Chance of precipitation27%
Record high96° (2022)
Record low38° (2021)
Thu, 0372° / 51°0.1
72 °
Humphrey, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.1 in
Chance of precipitation27%
Record high100° (1988)
Record low38° (2021)
Fri, 0472° / 51°0.06
72 °
Humphrey, Friday, 4 September
Climate normal for this date — 60-year average.
Average high72°
Average low51°
Average precipitation0.06 in
Chance of precipitation32%
Record high98° (1988)
Record low41° (2015)
Sat, 0571° / 52°0.11
71 °
Humphrey, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low52°
Average precipitation0.11 in
Chance of precipitation35%
Record high99° (2017)
Record low41° (2000)
Sun, 0671° / 51°0.14
71 °
Humphrey, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.14 in
Chance of precipitation35%
Record high94° (2024)
Record low41° (1969)
Mon, 0771° / 51°0.08
71 °
Humphrey, Monday, 7 September
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.08 in
Chance of precipitation32%
Record high94° (2024)
Record low38° (1992)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Humphrey, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Humphrey, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.