Monthly outlook for Harrisburg, AR: average high 103.1°, average low 76.8°. That is 8.1° above the climate normal for August. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 20 August (110.3°), the coolest 9 August (72.3°).
103.1°/76.8°
Average high / low
+8.1°
Above normal
3 / 4
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
101.4°
88.4°
+7.2°
19 August – 28 August
106°
88.8°
+9.5°
29 August – 7 September
at normal
86.4°
—
August records over 66 years
106.9°3 August 2011All-time high
55.8°14 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Cherry Valley (11 mi).
Mon, 1098° / 78°0
98 °
Harrisburg, Monday, 10 August
Clear. High 98°, low 78°.
Pressure30.06 inHg
Wind10.5 mph SW
Humidity52%
Visibility6.2 mi
Dew point72°
Tue, 1197° / 77°0
97 °
Harrisburg, Tuesday, 11 August
Clear. High 97°, low 77°.
Pressure30.00 inHg
Wind14.6 mph SW
Humidity50%
Visibility6.2 mi
Dew point71°
Wed, 12100° / 76°0.05
100 °
Harrisburg, Wednesday, 12 August
Light rain. High 100°, low 76°.
Pressure29.91 inHg
Wind10.9 mph SW
Humidity48%
Visibility6.2 mi
Dew point71°
Thu, 13100° / 75°0.1
100 °
Harrisburg, Thursday, 13 August
Light rain. High 100°, low 75°.
Pressure29.94 inHg
Wind4.6 mph S
Humidity76%
Visibility6.2 mi
Dew point74°
Fri, 14101° / 78°0
101 °
Harrisburg, Friday, 14 August
Overcast. High 101°, low 78°.
Pressure30.00 inHg
Wind13.8 mph SW
Humidity36%
Visibility—
Dew point63°
Sat, 15102° / 76°0
102 °
Harrisburg, Saturday, 15 August
Clear. High 102°, low 76°.
Pressure30.06 inHg
Wind13.1 mph SW
Humidity34%
Visibility—
Dew point63°
Sun, 16107° / 79°0
107 °
Harrisburg, Sunday, 16 August
Clear. High 107°, low 79°.
Pressure30.00 inHg
Wind14.8 mph SW
Humidity27%
Visibility—
Dew point59°
Mon, 17107° / 80°0
107 °
Harrisburg, Monday, 17 August
Mostly clear. High 107°, low 80°.
Pressure29.97 inHg
Wind12.8 mph SW
Humidity23%
Visibility—
Dew point56°
Tue, 18106° / 79°0
106 °
Harrisburg, Tuesday, 18 August
Clear. High 106°, low 79°.
Pressure29.97 inHg
Wind11.9 mph SW
Humidity26%
Visibility—
Dew point59°
Wed, 19108° / 80°0.03
108 °
Harrisburg, Wednesday, 19 August
Light rain. High 108°, low 80°.
Pressure29.97 inHg
Wind13.3 mph SE
Humidity25%
Visibility—
Dew point60°
Thu, 20110° / 79°0
110 °
Harrisburg, Thursday, 20 August
Partly cloudy. High 110°, low 79°.
Pressure29.88 inHg
Wind13.6 mph S
Humidity21%
Visibility—
Dew point56°
Fri, 21107° / 79°0.03
107 °
Harrisburg, Friday, 21 August
Light rain. High 107°, low 79°.
Pressure29.83 inHg
Wind15.7 mph W
Humidity20%
Visibility—
Dew point55°
Sat, 22103° / 75°0
103 °
Harrisburg, Saturday, 22 August
Partly cloudy. High 103°, low 75°.
Pressure29.88 inHg
Wind9.2 mph NE
Humidity37%
Visibility—
Dew point64°
Sun, 23104° / 74°0
104 °
Harrisburg, Sunday, 23 August
Clear. High 104°, low 74°.
Pressure29.94 inHg
Wind10.5 mph N
Humidity31%
Visibility—
Dew point60°
Mon, 24103° / 73°0.05
103 °
Harrisburg, Monday, 24 August
Light rain. High 103°, low 73°.
Pressure30.00 inHg
Wind11.7 mph W
Humidity32%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2589° / 72°0.05
89 °
Harrisburg, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high89°
Average low72°
Average precipitation0.05 in
Chance of precipitation20%
Record high100° (2023)
Record low60° (1966)
Wed, 2689° / 73°0.04
89 °
Harrisburg, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high89°
Average low73°
Average precipitation0.04 in
Chance of precipitation13%
Record high100° (2000)
Record low60° (1966)
Thu, 2789° / 73°0.11
89 °
Harrisburg, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high89°
Average low73°
Average precipitation0.11 in
Chance of precipitation22%
Record high100° (2000)
Record low60° (2025)
Fri, 2888° / 72°0.11
88 °
Harrisburg, Friday, 28 August
Climate normal for this date — 60-year average.
Average high88°
Average low72°
Average precipitation0.11 in
Chance of precipitation37%
Record high101° (2000)
Record low57° (1967)
Sat, 2988° / 72°0.1
88 °
Harrisburg, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low72°
Average precipitation0.1 in
Chance of precipitation25%
Record high102° (2000)
Record low57° (1986)
Sun, 3087° / 71°0.1
87 °
Harrisburg, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.1 in
Chance of precipitation32%
Record high103° (2000)
Record low60° (1986)
Mon, 3187° / 71°0.11
87 °
Harrisburg, Monday, 31 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.11 in
Chance of precipitation25%
Record high99° (2000)
Record low61° (2009)
Tue, 0187° / 71°0.08
87 °
Harrisburg, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.08 in
Chance of precipitation30%
Record high99° (2000)
Record low58° (2009)
Wed, 0287° / 71°0.13
87 °
Harrisburg, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.13 in
Chance of precipitation33%
Record high98° (2000)
Record low58° (1967)
Thu, 0386° / 71°0.12
86 °
Harrisburg, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high86°
Average low71°
Average precipitation0.12 in
Chance of precipitation38%
Record high98° (2000)
Record low57° (1974)
Fri, 0485° / 70°0.11
85 °
Harrisburg, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low70°
Average precipitation0.11 in
Chance of precipitation25%
Record high99° (2000)
Record low54° (1974)
Sat, 0585° / 70°0.06
85 °
Harrisburg, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low70°
Average precipitation0.06 in
Chance of precipitation28%
Record high97° (1990)
Record low57° (1997)
Sun, 0686° / 69°0.08
86 °
Harrisburg, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.08 in
Chance of precipitation20%
Record high98° (1990)
Record low58° (1988)
Mon, 0786° / 69°0.06
86 °
Harrisburg, Monday, 7 September
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.06 in
Chance of precipitation17%
Record high97° (1990)
Record low54° (1988)
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 Harrisburg, 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 Harrisburg, 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.