Monthly outlook for Grayson, CA: average high 101.8°, average low 66.4°. That is 5° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 10 August (111.8°), the coolest 16 August (60.4°).
101.8°/66.4°
Average high / low
+5°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
100.8°
93.8°
+3.9°
18 August – 27 August
103.4°
91.2°
+6.8°
28 August – 6 September
at normal
92°
—
August records over 66 years
110.7°15 August 2020All-time high
51.4°23 August 1973All-time low
Sun, 0999° / 68°0
99 °
Grayson, Sunday, 9 August
Clear. High 99°, low 68°.
Pressure29.77 inHg
Wind3.7 mph N
Humidity11%
Visibility6.2 mi
Dew point36°
Mon, 10112° / 68°0
112 °
Grayson, Monday, 10 August
Partly cloudy. High 112°, low 68°.
Pressure29.83 inHg
Wind4.1 mph NE
Humidity10%
Visibility6.2 mi
Dew point35°
Tue, 11108° / 69°0
108 °
Grayson, Tuesday, 11 August
Clear. High 108°, low 69°.
Pressure29.88 inHg
Wind4.6 mph NE
Humidity14%
Visibility6.2 mi
Dew point40°
Wed, 12104° / 68°0
104 °
Grayson, Wednesday, 12 August
Partly cloudy. High 104°, low 68°.
Pressure29.80 inHg
Wind4.1 mph NE
Humidity16%
Visibility6.2 mi
Dew point42°
Thu, 13102° / 65°0
102 °
Grayson, Thursday, 13 August
Overcast. High 102°, low 65°.
Pressure29.77 inHg
Wind6.6 mph N
Humidity16%
Visibility—
Dew point41°
Fri, 1494° / 66°0
94 °
Grayson, Friday, 14 August
Overcast. High 94°, low 66°.
Pressure29.85 inHg
Wind8.3 mph NW
Humidity21%
Visibility—
Dew point44°
Sat, 15100° / 62°0
100 °
Grayson, Saturday, 15 August
Mostly clear. High 100°, low 62°.
Pressure29.91 inHg
Wind12.1 mph NW
Humidity16%
Visibility—
Dew point40°
Sun, 16102° / 60°0
102 °
Grayson, Sunday, 16 August
Overcast. High 102°, low 60°.
Pressure29.94 inHg
Wind10.9 mph NW
Humidity16%
Visibility—
Dew point41°
Mon, 1795° / 67°0
95 °
Grayson, Monday, 17 August
Overcast. High 95°, low 67°.
Pressure30.00 inHg
Wind9.2 mph N
Humidity16%
Visibility—
Dew point38°
Tue, 18101° / 69°0
101 °
Grayson, Tuesday, 18 August
Clear. High 101°, low 69°.
Pressure29.94 inHg
Wind12.7 mph NW
Humidity12%
Visibility—
Dew point35°
Wed, 19101° / 66°0
101 °
Grayson, Wednesday, 19 August
Clear. High 101°, low 66°.
Pressure29.88 inHg
Wind13.7 mph NW
Humidity11%
Visibility—
Dew point34°
Thu, 20101° / 62°0
101 °
Grayson, Thursday, 20 August
Clear. High 101°, low 62°.
Pressure29.85 inHg
Wind11 mph N
Humidity17%
Visibility—
Dew point43°
Fri, 21106° / 67°0
106 °
Grayson, Friday, 21 August
Clear. High 106°, low 67°.
Pressure29.80 inHg
Wind9.4 mph N
Humidity15%
Visibility—
Dew point43°
Sat, 22108° / 72°0
108 °
Grayson, Saturday, 22 August
Overcast. High 108°, low 72°.
Pressure29.77 inHg
Wind8.9 mph N
Humidity14%
Visibility—
Dew point43°
Sun, 23104° / 70°0
104 °
Grayson, Sunday, 23 August
Mostly clear. High 104°, low 70°.
Pressure29.77 inHg
Wind13.3 mph N
Humidity16%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2492° / 62°0
92 °
Grayson, Monday, 24 August
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high104° (2020)
Record low53° (1963)
Tue, 2591° / 62°0
91 °
Grayson, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2010)
Record low53° (1963)
Wed, 2691° / 61°0
91 °
Grayson, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high91°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high102° (2019)
Record low53° (1976)
Thu, 2792° / 62°0
92 °
Grayson, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2017)
Record low53° (1960)
Fri, 2893° / 62°0
93 °
Grayson, Friday, 28 August
Climate normal for this date — 60-year average.
Average high93°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2021)
Record low55° (1960)
Sat, 2992° / 62°0
92 °
Grayson, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2021)
Record low54° (1980)
Sun, 3091° / 62°0
91 °
Grayson, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2007)
Record low53° (2010)
Mon, 3192° / 62°0
92 °
Grayson, Monday, 31 August
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high104° (2025)
Record low55° (1975)
Tue, 0192° / 62°0
92 °
Grayson, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation2%
Record high107° (2017)
Record low54° (1999)
Wed, 0292° / 62°0.01
92 °
Grayson, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0.01 in
Chance of precipitation5%
Record high108° (2017)
Record low54° (1960)
Thu, 0392° / 62°0
92 °
Grayson, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation2%
Record high105° (2017)
Record low53° (2000)
Fri, 0492° / 62°0
92 °
Grayson, Friday, 4 September
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation2%
Record high109° (2022)
Record low51° (1960)
Sat, 0592° / 62°0.01
92 °
Grayson, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0.01 in
Chance of precipitation3%
Record high114° (2022)
Record low53° (2015)
Sun, 0692° / 62°0
92 °
Grayson, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation2%
Record high118° (2022)
Record low54° (1973)
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 Grayson, CA 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 Grayson, CA 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.