Monthly outlook for Dartford, WA: average high 89.2°, average low 65.1°. That is 2.7° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 16 August (95.2°), the coolest 10 August (55.8°).
89.2°/65.1°
Average high / low
+2.7°
Above normal
1 / 2
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
89.4°
85.4°
+2.2°
18 August – 27 August
88.8°
81.7°
+3.9°
28 August – 6 September
at normal
79.5°
—
August records over 66 years
107.1°4 August 1961All-time high
42.4°31 August 1964All-time low
Climate normals and records are computed from the nearest reference point — Spokane (8 mi).
Sun, 0988° / 57°0
88 °
Dartford, Sunday, 9 August
Clear. High 88°, low 57°.
Pressure29.88 inHg
Wind7.1 mph SW
Humidity17%
Visibility6.2 mi
Dew point34°
Mon, 1087° / 56°0
87 °
Dartford, Monday, 10 August
Clear. High 87°, low 56°.
Pressure29.88 inHg
Wind7.8 mph S
Humidity20%
Visibility6.2 mi
Dew point37°
Tue, 1190° / 65°0
90 °
Dartford, Tuesday, 11 August
Clear. High 90°, low 65°.
Pressure29.91 inHg
Wind8.5 mph S
Humidity20%
Visibility6.2 mi
Dew point39°
Wed, 1288° / 68°0
88 °
Dartford, Wednesday, 12 August
Overcast. High 88°, low 68°.
Pressure29.83 inHg
Wind7.8 mph S
Humidity25%
Visibility6.2 mi
Dew point44°
Thu, 1385° / 65°0
85 °
Dartford, Thursday, 13 August
Partly cloudy. High 85°, low 65°.
Pressure29.85 inHg
Wind9.4 mph N
Humidity35%
Visibility—
Dew point45°
Fri, 1488° / 60°0
88 °
Dartford, Friday, 14 August
Clear. High 88°, low 60°.
Pressure29.97 inHg
Wind5.2 mph N
Humidity33%
Visibility—
Dew point44°
Sat, 1591° / 64°0
91 °
Dartford, Saturday, 15 August
Clear. High 91°, low 64°.
Pressure30.00 inHg
Wind4.1 mph SW
Humidity23%
Visibility—
Dew point38°
Sun, 1695° / 70°0
95 °
Dartford, Sunday, 16 August
Clear. High 95°, low 70°.
Pressure29.94 inHg
Wind13.8 mph SW
Humidity17%
Visibility—
Dew point36°
Mon, 1794° / 71°0
94 °
Dartford, Monday, 17 August
Partly cloudy. High 94°, low 71°.
Pressure29.91 inHg
Wind8.6 mph W
Humidity14%
Visibility—
Dew point29°
Tue, 1892° / 75°0
92 °
Dartford, Tuesday, 18 August
Light rain. High 92°, low 75°.
Pressure29.91 inHg
Wind17.6 mph S
Humidity22%
Visibility—
Dew point43°
Wed, 1989° / 64°0.13
89 °
Dartford, Wednesday, 19 August
Rain. High 89°, low 64°.
Pressure29.97 inHg
Wind10.3 mph SW
Humidity43%
Visibility—
Dew point52°
Thu, 2086° / 68°0
86 °
Dartford, Thursday, 20 August
Overcast. High 86°, low 68°.
Pressure29.88 inHg
Wind9.7 mph SW
Humidity25%
Visibility—
Dew point38°
Fri, 2186° / 65°0
86 °
Dartford, Friday, 21 August
Partly cloudy. High 86°, low 65°.
Pressure29.91 inHg
Wind8.5 mph SW
Humidity30%
Visibility—
Dew point41°
Sat, 2291° / 67°0
91 °
Dartford, Saturday, 22 August
Partly cloudy. High 91°, low 67°.
Pressure29.88 inHg
Wind6 mph SW
Humidity19%
Visibility—
Dew point33°
Sun, 2388° / 68°0
88 °
Dartford, Sunday, 23 August
Overcast. High 88°, low 68°.
Pressure29.83 inHg
Wind11.6 mph SW
Humidity28%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2480° / 57°0.05
80 °
Dartford, Monday, 24 August
Climate normal for this date — 60-year average.
Average high80°
Average low57°
Average precipitation0.05 in
Chance of precipitation13%
Record high98° (1966)
Record low44° (2021)
Tue, 2580° / 56°0.03
80 °
Dartford, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.03 in
Chance of precipitation10%
Record high95° (1996)
Record low43° (1992)
Wed, 2682° / 56°0.02
82 °
Dartford, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.02 in
Chance of precipitation10%
Record high97° (1996)
Record low47° (1976)
Thu, 2781° / 57°0.02
81 °
Dartford, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low57°
Average precipitation0.02 in
Chance of precipitation12%
Record high95° (1986)
Record low43° (1960)
Fri, 2881° / 56°0.02
81 °
Dartford, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.02 in
Chance of precipitation10%
Record high99° (2009)
Record low44° (1960)
Sat, 2982° / 57°0.01
82 °
Dartford, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0.01 in
Chance of precipitation13%
Record high96° (2017)
Record low43° (1965)
Sun, 3080° / 56°0.03
80 °
Dartford, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.03 in
Chance of precipitation12%
Record high95° (1967)
Record low45° (1965)
Mon, 3179° / 56°0.02
79 °
Dartford, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.02 in
Chance of precipitation17%
Record high103° (2022)
Record low42° (1964)
Tue, 0179° / 56°0.02
79 °
Dartford, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.02 in
Chance of precipitation10%
Record high97° (2025)
Record low45° (2021)
Wed, 0279° / 55°0.02
79 °
Dartford, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation10%
Record high100° (2025)
Record low44° (1999)
Thu, 0379° / 55°0.02
79 °
Dartford, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation13%
Record high101° (1988)
Record low43° (1980)
Fri, 0480° / 55°0.01
80 °
Dartford, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.01 in
Chance of precipitation12%
Record high99° (1988)
Record low45° (1965)
Sat, 0579° / 55°0.02
79 °
Dartford, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation7%
Record high96° (1988)
Record low44° (1969)
Sun, 0678° / 54°0.02
78 °
Dartford, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low54°
Average precipitation0.02 in
Chance of precipitation15%
Record high95° (2024)
Record low41° (1960)
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 Dartford, 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 Dartford, 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.