Monthly outlook for Petersburg, WV: average high 89.4°, average low 65.1°. That is 4° above the climate normal for August. Precipitation is expected on 2 days (about 2.1 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 23 August (103.2°), the coolest 16 August (53.5°).
89.4°/65.1°
Average high / low
+4°
Above normal
2 / 6
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84°
82.5°
+0.9°
19 August – 28 August
98.3°
81.9°
+9.1°
29 August – 7 September
at normal
80.3°
—
August records over 66 years
97.9°28 August 2024All-time high
44.8°29 August 1986All-time low
Mon, 1089° / 70°0
89 °
Petersburg, Monday, 10 August
Light rain. High 89°, low 70°.
Pressure30.03 inHg
Wind7.7 mph W
Humidity42%
Visibility6.2 mi
Dew point61°
Tue, 1190° / 66°0.92
90 °
Petersburg, Tuesday, 11 August
Heavy rain. High 90°, low 66°.
Pressure29.94 inHg
Wind8.1 mph NW
Humidity51%
Visibility6.2 mi
Dew point64°
Wed, 1290° / 65°1.11
90 °
Petersburg, Wednesday, 12 August
Heavy rain. High 90°, low 65°.
Pressure29.83 inHg
Wind4.8 mph SW
Humidity70%
Visibility6.2 mi
Dew point65°
Thu, 1382° / 64°0
82 °
Petersburg, Thursday, 13 August
Overcast. High 82°, low 64°.
Pressure29.91 inHg
Wind10.8 mph NW
Humidity43%
Visibility—
Dew point56°
Fri, 1479° / 58°0
79 °
Petersburg, Friday, 14 August
Overcast. High 79°, low 58°.
Pressure30.06 inHg
Wind5.4 mph NW
Humidity38%
Visibility—
Dew point49°
Sat, 1579° / 55°0
79 °
Petersburg, Saturday, 15 August
Overcast. High 79°, low 55°.
Pressure30.18 inHg
Wind8.5 mph N
Humidity29%
Visibility—
Dew point42°
Sun, 1674° / 53°0.02
74 °
Petersburg, Sunday, 16 August
Light rain. High 74°, low 53°.
Pressure30.15 inHg
Wind3.5 mph SW
Humidity61%
Visibility—
Dew point56°
Mon, 1784° / 58°0
84 °
Petersburg, Monday, 17 August
Overcast. High 84°, low 58°.
Pressure29.97 inHg
Wind4.6 mph NW
Humidity44%
Visibility—
Dew point57°
Tue, 1885° / 60°0
85 °
Petersburg, Tuesday, 18 August
Clear. High 85°, low 60°.
Pressure30.00 inHg
Wind4.7 mph NE
Humidity37%
Visibility—
Dew point53°
Wed, 1990° / 62°0
90 °
Petersburg, Wednesday, 19 August
Partly cloudy. High 90°, low 62°.
Pressure30.03 inHg
Wind4.8 mph SE
Humidity35%
Visibility—
Dew point56°
Thu, 2096° / 65°0
96 °
Petersburg, Thursday, 20 August
Clear. High 96°, low 65°.
Pressure29.97 inHg
Wind4.1 mph SW
Humidity32%
Visibility—
Dew point58°
Fri, 21100° / 74°0
100 °
Petersburg, Friday, 21 August
Partly cloudy. High 100°, low 74°.
Pressure29.85 inHg
Wind10.8 mph W
Humidity36%
Visibility—
Dew point66°
Sat, 2298° / 75°0
98 °
Petersburg, Saturday, 22 August
Overcast. High 98°, low 75°.
Pressure29.91 inHg
Wind5.6 mph NE
Humidity29%
Visibility—
Dew point57°
Sun, 23103° / 71°0
103 °
Petersburg, Sunday, 23 August
Partly cloudy. High 103°, low 71°.
Pressure29.91 inHg
Wind5.3 mph NW
Humidity28%
Visibility—
Dew point60°
Mon, 24103° / 74°0.04
103 °
Petersburg, Monday, 24 August
Light rain. High 103°, low 74°.
Pressure29.97 inHg
Wind9.2 mph W
Humidity29%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 62°0.07
82 °
Petersburg, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low62°
Average precipitation0.07 in
Chance of precipitation32%
Record high93° (2007)
Record low50° (1986)
Wed, 2683° / 62°0.06
83 °
Petersburg, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low62°
Average precipitation0.06 in
Chance of precipitation28%
Record high93° (2023)
Record low52° (1982)
Thu, 2783° / 64°0.11
83 °
Petersburg, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.11 in
Chance of precipitation37%
Record high94° (2024)
Record low49° (2025)
Fri, 2883° / 64°0.08
83 °
Petersburg, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.08 in
Chance of precipitation37%
Record high98° (2024)
Record low48° (2025)
Sat, 2982° / 63°0.11
82 °
Petersburg, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.11 in
Chance of precipitation38%
Record high93° (2018)
Record low45° (1986)
Sun, 3082° / 62°0.07
82 °
Petersburg, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high93° (2010)
Record low47° (1965)
Mon, 3181° / 63°0.08
81 °
Petersburg, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.08 in
Chance of precipitation28%
Record high93° (1995)
Record low49° (1976)
Tue, 0180° / 62°0.13
80 °
Petersburg, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.13 in
Chance of precipitation43%
Record high94° (2010)
Record low48° (1967)
Wed, 0281° / 61°0.07
81 °
Petersburg, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low61°
Average precipitation0.07 in
Chance of precipitation33%
Record high95° (2010)
Record low47° (1967)
Thu, 0381° / 61°0.07
81 °
Petersburg, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low61°
Average precipitation0.07 in
Chance of precipitation30%
Record high94° (2011)
Record low47° (2021)
Fri, 0480° / 62°0.09
80 °
Petersburg, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.09 in
Chance of precipitation37%
Record high93° (2023)
Record low50° (1997)
Sat, 0579° / 61°0.17
79 °
Petersburg, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.17 in
Chance of precipitation35%
Record high96° (2023)
Record low47° (1997)
Sun, 0679° / 60°0.19
79 °
Petersburg, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.19 in
Chance of precipitation28%
Record high97° (2023)
Record low49° (2000)
Mon, 0779° / 60°0.05
79 °
Petersburg, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.05 in
Chance of precipitation22%
Record high92° (2023)
Record low46° (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 Petersburg, WV 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 Petersburg, WV 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.