Monthly outlook for Altoona, OH: average high 87.4°, average low 64.7°. That is 2.3° above the climate normal for August. Precipitation is expected on 7 days (about 4.0 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 23 August (99.2°), the coolest 15 August (53.8°).
87.4°/64.7°
Average high / low
+2.3°
Above normal
7 / 6
Wet days / normal
4.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.6°
83.3°
+0.2°
19 August – 28 August
93.7°
83.2°
+5.8°
29 August – 7 September
at normal
81.6°
—
August records over 66 years
102°17 August 1988All-time high
48°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Wellston (3 mi).
Mon, 1093° / 68°0.2
93 °
Altoona, Monday, 10 August
Rain. High 93°, low 68°.
Pressure30.03 inHg
Wind11.5 mph SW
Humidity61%
Visibility6.2 mi
Dew point70°
Tue, 1193° / 67°1.18
93 °
Altoona, Tuesday, 11 August
Heavy rain. High 93°, low 67°.
Pressure29.97 inHg
Wind8.6 mph SW
Humidity76%
Visibility6.2 mi
Dew point72°
Wed, 1290° / 64°1.85
90 °
Altoona, Wednesday, 12 August
Heavy rain. High 90°, low 64°.
Pressure29.80 inHg
Wind10.4 mph W
Humidity62%
Visibility6.2 mi
Dew point72°
Thu, 1383° / 63°0
83 °
Altoona, Thursday, 13 August
Clear. High 83°, low 63°.
Pressure29.94 inHg
Wind8.3 mph NW
Humidity44%
Visibility—
Dew point56°
Fri, 1473° / 60°0.28
73 °
Altoona, Friday, 14 August
Rain. High 73°, low 60°.
Pressure30.15 inHg
Wind4 mph NE
Humidity86%
Visibility—
Dew point60°
Sat, 1578° / 54°0
78 °
Altoona, Saturday, 15 August
Overcast. High 78°, low 54°.
Pressure30.24 inHg
Wind7 mph NE
Humidity41%
Visibility—
Dew point49°
Sun, 1674° / 56°0
74 °
Altoona, Sunday, 16 August
Overcast. High 74°, low 56°.
Pressure30.15 inHg
Wind5.4 mph E
Humidity69%
Visibility—
Dew point55°
Mon, 1779° / 58°0
79 °
Altoona, Monday, 17 August
Overcast. High 79°, low 58°.
Pressure30.03 inHg
Wind8 mph NW
Humidity52%
Visibility—
Dew point56°
Tue, 1884° / 60°0
84 °
Altoona, Tuesday, 18 August
Clear. High 84°, low 60°.
Pressure30.03 inHg
Wind4.1 mph NE
Humidity46%
Visibility—
Dew point57°
Wed, 1986° / 61°0
86 °
Altoona, Wednesday, 19 August
Clear. High 86°, low 61°.
Pressure30.03 inHg
Wind4.2 mph E
Humidity42%
Visibility—
Dew point56°
Thu, 2094° / 67°0.07
94 °
Altoona, Thursday, 20 August
Light rain. High 94°, low 67°.
Pressure29.94 inHg
Wind10.1 mph S
Humidity54%
Visibility—
Dew point65°
Fri, 2196° / 76°0
96 °
Altoona, Friday, 21 August
Partly cloudy. High 96°, low 76°.
Pressure29.83 inHg
Wind8.5 mph W
Humidity43%
Visibility—
Dew point67°
Sat, 2294° / 70°0
94 °
Altoona, Saturday, 22 August
Mostly clear. High 94°, low 70°.
Pressure29.94 inHg
Wind5.4 mph NE
Humidity36%
Visibility—
Dew point59°
Sun, 2399° / 71°0
99 °
Altoona, Sunday, 23 August
Clear. High 99°, low 71°.
Pressure29.91 inHg
Wind5.3 mph SE
Humidity41%
Visibility—
Dew point66°
Mon, 2493° / 71°0.04
93 °
Altoona, Monday, 24 August
Light rain. High 93°, low 71°.
Pressure30.00 inHg
Wind6.9 mph N
Humidity53%
Visibility—
Dew point71°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 65°0.08
83 °
Altoona, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.08 in
Chance of precipitation32%
Record high95° (2006)
Record low56° (2017)
Wed, 2683° / 65°0.09
83 °
Altoona, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.09 in
Chance of precipitation30%
Record high94° (1983)
Record low54° (2025)
Thu, 2784° / 66°0.12
84 °
Altoona, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.12 in
Chance of precipitation33%
Record high95° (2024)
Record low52° (2025)
Fri, 2883° / 66°0.11
83 °
Altoona, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.11 in
Chance of precipitation35%
Record high96° (2024)
Record low52° (2025)
Sat, 2983° / 66°0.07
83 °
Altoona, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.07 in
Chance of precipitation30%
Record high95° (2007)
Record low48° (1986)
Sun, 3082° / 65°0.12
82 °
Altoona, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation37%
Record high96° (2024)
Record low50° (1986)
Mon, 3182° / 65°0.11
82 °
Altoona, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation35%
Record high94° (1993)
Record low54° (1976)
Tue, 0182° / 64°0.11
82 °
Altoona, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.11 in
Chance of precipitation38%
Record high93° (2010)
Record low51° (1967)
Wed, 0282° / 64°0.1
82 °
Altoona, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.1 in
Chance of precipitation33%
Record high96° (2011)
Record low51° (1967)
Thu, 0382° / 64°0.12
82 °
Altoona, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.12 in
Chance of precipitation35%
Record high97° (2011)
Record low52° (1967)
Fri, 0481° / 64°0.06
81 °
Altoona, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.06 in
Chance of precipitation22%
Record high92° (2018)
Record low50° (1997)
Sat, 0580° / 63°0.1
80 °
Altoona, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.1 in
Chance of precipitation30%
Record high94° (2007)
Record low51° (1997)
Sun, 0681° / 62°0.07
81 °
Altoona, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low62°
Average precipitation0.07 in
Chance of precipitation30%
Record high94° (2007)
Record low50° (1988)
Mon, 0781° / 62°0.06
81 °
Altoona, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low62°
Average precipitation0.06 in
Chance of precipitation20%
Record high93° (2002)
Record low48° (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 Altoona, OH 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 Altoona, OH 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.