Monthly outlook for Walnut Grove, AR: average high 105.9°, average low 78.5°. That is 10.3° above the climate normal for August. Precipitation is expected on 0 days (about 0.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 20 August (111.3°), the coolest 23 August (73.1°).
105.9°/78.5°
Average high / low
+10.3°
Above normal
0 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
104.4°
87°
+9.6°
19 August – 28 August
108.3°
87.5°
+11.6°
29 August – 7 September
at normal
84.9°
—
August records over 66 years
107.2°3 August 2011All-time high
52.7°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Fayetteville (7 mi).
Mon, 10101° / 75°0
101 °
Walnut Grove, Monday, 10 August
Mostly clear. High 101°, low 75°.
Pressure30.00 inHg
Wind13 mph SW
Humidity40%
Visibility6.2 mi
Dew point66°
Tue, 11102° / 77°0
102 °
Walnut Grove, Tuesday, 11 August
Clear. High 102°, low 77°.
Pressure29.94 inHg
Wind14 mph SW
Humidity37%
Visibility6.2 mi
Dew point65°
Wed, 12102° / 80°0
102 °
Walnut Grove, Wednesday, 12 August
Overcast. High 102°, low 80°.
Pressure29.88 inHg
Wind13.2 mph SW
Humidity35%
Visibility6.2 mi
Dew point63°
Thu, 13104° / 79°0
104 °
Walnut Grove, Thursday, 13 August
Overcast. High 104°, low 79°.
Pressure29.85 inHg
Wind16.1 mph SW
Humidity26%
Visibility—
Dew point58°
Fri, 14105° / 81°0
105 °
Walnut Grove, Friday, 14 August
Partly cloudy. High 105°, low 81°.
Pressure29.94 inHg
Wind17.1 mph SW
Humidity29%
Visibility—
Dew point60°
Sat, 15106° / 80°0
106 °
Walnut Grove, Saturday, 15 August
Overcast. High 106°, low 80°.
Pressure30.06 inHg
Wind12.9 mph SW
Humidity27%
Visibility—
Dew point59°
Sun, 16108° / 82°0
108 °
Walnut Grove, Sunday, 16 August
Partly cloudy. High 108°, low 82°.
Pressure30.03 inHg
Wind18.5 mph NE
Humidity21%
Visibility—
Dew point55°
Mon, 17107° / 79°0.02
107 °
Walnut Grove, Monday, 17 August
Light rain. High 107°, low 79°.
Pressure29.97 inHg
Wind13.8 mph SW
Humidity19%
Visibility—
Dew point53°
Tue, 18110° / 79°0
110 °
Walnut Grove, Tuesday, 18 August
Clear. High 110°, low 79°.
Pressure29.91 inHg
Wind13.5 mph SW
Humidity18%
Visibility—
Dew point51°
Wed, 19110° / 82°0
110 °
Walnut Grove, Wednesday, 19 August
Clear. High 110°, low 82°.
Pressure29.91 inHg
Wind13.3 mph SW
Humidity17%
Visibility—
Dew point50°
Thu, 20111° / 81°0
111 °
Walnut Grove, Thursday, 20 August
Clear. High 111°, low 81°.
Pressure29.91 inHg
Wind14 mph SW
Humidity15%
Visibility—
Dew point48°
Fri, 21111° / 82°0
111 °
Walnut Grove, Friday, 21 August
Mostly clear. High 111°, low 82°.
Pressure29.88 inHg
Wind11.4 mph S
Humidity15%
Visibility—
Dew point49°
Sat, 22108° / 79°0.01
108 °
Walnut Grove, Saturday, 22 August
Light rain. High 108°, low 79°.
Pressure29.91 inHg
Wind11.6 mph S
Humidity23%
Visibility—
Dew point56°
Sun, 23105° / 73°0.04
105 °
Walnut Grove, Sunday, 23 August
Light rain. High 105°, low 73°.
Pressure29.91 inHg
Wind18.7 mph S
Humidity26%
Visibility—
Dew point56°
Mon, 24105° / 76°0.01
105 °
Walnut Grove, Monday, 24 August
Light rain. High 105°, low 76°.
Pressure29.94 inHg
Wind24.9 mph E
Humidity23%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2587° / 70°0.04
87 °
Walnut Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.04 in
Chance of precipitation25%
Record high99° (2023)
Record low57° (1966)
Wed, 2688° / 70°0.06
88 °
Walnut Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high88°
Average low70°
Average precipitation0.06 in
Chance of precipitation28%
Record high98° (2023)
Record low58° (1985)
Thu, 2787° / 70°0.11
87 °
Walnut Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.11 in
Chance of precipitation37%
Record high98° (2000)
Record low60° (2025)
Fri, 2886° / 69°0.12
86 °
Walnut Grove, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.12 in
Chance of precipitation28%
Record high99° (2000)
Record low57° (1992)
Sat, 2986° / 69°0.07
86 °
Walnut Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.07 in
Chance of precipitation28%
Record high99° (1984)
Record low53° (1986)
Sun, 3086° / 69°0.1
86 °
Walnut Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.1 in
Chance of precipitation35%
Record high100° (2000)
Record low56° (1988)
Mon, 3186° / 68°0.08
86 °
Walnut Grove, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.08 in
Chance of precipitation33%
Record high100° (2000)
Record low55° (2009)
Tue, 0185° / 68°0.12
85 °
Walnut Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.12 in
Chance of precipitation37%
Record high99° (2000)
Record low54° (1967)
Wed, 0284° / 68°0.18
84 °
Walnut Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.18 in
Chance of precipitation48%
Record high100° (2000)
Record low53° (1974)
Thu, 0385° / 67°0.13
85 °
Walnut Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.13 in
Chance of precipitation40%
Record high101° (2000)
Record low50° (1974)
Fri, 0484° / 67°0.08
84 °
Walnut Grove, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.08 in
Chance of precipitation28%
Record high100° (1998)
Record low48° (1974)
Sat, 0584° / 67°0.07
84 °
Walnut Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.07 in
Chance of precipitation25%
Record high99° (1998)
Record low51° (1974)
Sun, 0685° / 66°0.04
85 °
Walnut Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low66°
Average precipitation0.04 in
Chance of precipitation20%
Record high98° (2012)
Record low51° (1974)
Mon, 0784° / 66°0.06
84 °
Walnut Grove, Monday, 7 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.06 in
Chance of precipitation30%
Record high98° (1998)
Record low51° (2017)
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 Walnut Grove, AR 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 Walnut Grove, AR 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.