Monthly outlook for Petersburg, KS: average high 104.2°, average low 76.2°. That is 9.3° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 18 August (112.6°), the coolest 17 August (67.7°).
104.2°/76.2°
Average high / low
+9.3°
Above normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
103.9°
87.3°
+9.2°
19 August – 28 August
104.6°
87.5°
+9.5°
29 August – 7 September
at normal
84.7°
—
August records over 66 years
107.4°2 August 2011All-time high
54.5°31 August 2009All-time low
Climate normals and records are computed from the nearest reference point — Moran (14 mi).
Mon, 1098° / 78°0
98 °
Petersburg, Monday, 10 August
Clear. High 98°, low 78°.
Pressure29.91 inHg
Wind20.9 mph SW
Humidity40%
Visibility6.2 mi
Dew point66°
Tue, 11105° / 80°0
105 °
Petersburg, Tuesday, 11 August
Clear. High 105°, low 80°.
Pressure29.85 inHg
Wind20.3 mph SW
Humidity39%
Visibility6.2 mi
Dew point67°
Wed, 12107° / 79°0
107 °
Petersburg, Wednesday, 12 August
Light rain. High 107°, low 79°.
Pressure29.80 inHg
Wind14 mph SW
Humidity31%
Visibility6.2 mi
Dew point63°
Thu, 13107° / 84°0
107 °
Petersburg, Thursday, 13 August
Partly cloudy. High 107°, low 84°.
Pressure29.80 inHg
Wind19.7 mph SW
Humidity30%
Visibility6.2 mi
Dew point62°
Fri, 14107° / 84°0
107 °
Petersburg, Friday, 14 August
Clear. High 107°, low 84°.
Pressure29.85 inHg
Wind23.1 mph SW
Humidity27%
Visibility—
Dew point60°
Sat, 15109° / 83°0
109 °
Petersburg, Saturday, 15 August
Clear. High 109°, low 83°.
Pressure29.91 inHg
Wind21.6 mph SW
Humidity21%
Visibility—
Dew point55°
Sun, 16105° / 77°0
105 °
Petersburg, Sunday, 16 August
Overcast. High 105°, low 77°.
Pressure29.94 inHg
Wind18.4 mph NE
Humidity27%
Visibility—
Dew point58°
Mon, 1794° / 68°0.03
94 °
Petersburg, Monday, 17 August
Light rain. High 94°, low 68°.
Pressure30.03 inHg
Wind16.9 mph E
Humidity49%
Visibility—
Dew point63°
Tue, 18113° / 75°0
113 °
Petersburg, Tuesday, 18 August
Partly cloudy. High 113°, low 75°.
Pressure29.74 inHg
Wind31.5 mph NW
Humidity10%
Visibility—
Dew point40°
Wed, 19106° / 80°0
106 °
Petersburg, Wednesday, 19 August
Mostly clear. High 106°, low 80°.
Pressure29.85 inHg
Wind13.8 mph NE
Humidity24%
Visibility—
Dew point56°
Thu, 20103° / 69°0.02
103 °
Petersburg, Thursday, 20 August
Light rain. High 103°, low 69°.
Pressure29.88 inHg
Wind14.1 mph E
Humidity26%
Visibility—
Dew point53°
Fri, 21111° / 71°0
111 °
Petersburg, Friday, 21 August
Clear. High 111°, low 71°.
Pressure29.71 inHg
Wind10.4 mph E
Humidity24%
Visibility—
Dew point55°
Sat, 22109° / 75°0
109 °
Petersburg, Saturday, 22 August
Overcast. High 109°, low 75°.
Pressure29.83 inHg
Wind14.3 mph NE
Humidity13%
Visibility—
Dew point42°
Sun, 23102° / 68°0
102 °
Petersburg, Sunday, 23 August
Partly cloudy. High 102°, low 68°.
Pressure30.06 inHg
Wind16.7 mph NE
Humidity17%
Visibility—
Dew point42°
Mon, 2497° / 72°0
97 °
Petersburg, Monday, 24 August
Overcast. High 97°, low 72°.
Pressure30.09 inHg
Wind12.3 mph SE
Humidity34%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2588° / 71°0.11
88 °
Petersburg, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.11 in
Chance of precipitation17%
Record high99° (2023)
Record low58° (2015)
Wed, 2688° / 71°0.12
88 °
Petersburg, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.12 in
Chance of precipitation27%
Record high98° (1983)
Record low55° (2025)
Thu, 2787° / 71°0.1
87 °
Petersburg, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.1 in
Chance of precipitation27%
Record high101° (2000)
Record low58° (2025)
Fri, 2887° / 70°0.09
87 °
Petersburg, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.09 in
Chance of precipitation22%
Record high100° (2000)
Record low56° (1992)
Sat, 2986° / 69°0.08
86 °
Petersburg, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.08 in
Chance of precipitation35%
Record high99° (2000)
Record low56° (1986)
Sun, 3086° / 69°0.09
86 °
Petersburg, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.09 in
Chance of precipitation35%
Record high99° (2000)
Record low59° (2009)
Mon, 3185° / 69°0.13
85 °
Petersburg, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.13 in
Chance of precipitation28%
Record high101° (2000)
Record low55° (2009)
Tue, 0185° / 69°0.14
85 °
Petersburg, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.14 in
Chance of precipitation32%
Record high100° (2000)
Record low56° (1967)
Wed, 0285° / 68°0.15
85 °
Petersburg, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.15 in
Chance of precipitation28%
Record high103° (2000)
Record low52° (1974)
Thu, 0385° / 68°0.09
85 °
Petersburg, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.09 in
Chance of precipitation27%
Record high100° (2000)
Record low49° (1974)
Fri, 0485° / 68°0.14
85 °
Petersburg, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.14 in
Chance of precipitation27%
Record high97° (1978)
Record low48° (1974)
Sat, 0584° / 67°0.05
84 °
Petersburg, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.05 in
Chance of precipitation20%
Record high98° (1998)
Record low49° (1974)
Sun, 0684° / 67°0.06
84 °
Petersburg, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.06 in
Chance of precipitation23%
Record high97° (1998)
Record low52° (2025)
Mon, 0783° / 67°0.09
83 °
Petersburg, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation27%
Record high96° (1998)
Record low54° (2025)
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, KS 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, KS 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.