As of 10:11 CDT

Weather in Petersburg, MN

74°Current weather

Petersburg, Sunday, 9 August, 10:11

Clear. Feels like 75°. High 81°, low 65°.

Pressure29.85 inHg
Wind4.9 mph S
Humidity80%
Visibility6.2 mi
Dew point67°

Monthly outlook for Petersburg, MN: average high 84.5°, average low 62.3°. That is 3.5° above the climate normal for August. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 24 August (96.6°), the coolest 19 August (59.1°).

84.5°/62.3°
Average high / low
+3.5°
Above normal
5 / 5
Wet days / normal
1.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August81.7°78.2°+1.9°
19 August – 28 August89.3°78.3°+6.1°
29 August – 7 Septemberat normal76.8°

August records over 66 years

97.3°2 August 2022All-time high
44.2°28 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Jackson (8 mi).

Mon, 1079° / 61°0.27Rain
79 °Rain

Petersburg, Monday, 10 August

Rain. High 79°, low 61°.

Pressure29.88 inHg
Wind7.3 mph SE
Humidity60%
Visibility6.2 mi
Dew point62°
Tue, 1191° / 68°0Partly cloudy
91 °Partly cloudy

Petersburg, Tuesday, 11 August

Partly cloudy. High 91°, low 68°.

Pressure29.77 inHg
Wind8.1 mph NE
Humidity49%
Visibility6.2 mi
Dew point65°
Wed, 1291° / 62°0.01Light rain
91 °Light rain

Petersburg, Wednesday, 12 August

Light rain. High 91°, low 62°.

Pressure29.85 inHg
Wind10.4 mph E
Humidity51%
Visibility6.2 mi
Dew point66°
Thu, 1376° / 65°0.57Rain
76 °Rain

Petersburg, Thursday, 13 August

Rain. High 76°, low 65°.

Pressure29.94 inHg
Wind9.6 mph NE
Humidity71%
Visibility
Dew point63°
Fri, 1480° / 60°0.01Light rain
80 °Light rain

Petersburg, Friday, 14 August

Light rain. High 80°, low 60°.

Pressure30.06 inHg
Wind17.3 mph SE
Humidity52%
Visibility
Dew point57°
Sat, 1567° / 60°0.39Rain
67 °Rain

Petersburg, Saturday, 15 August

Rain. High 67°, low 60°.

Pressure30.09 inHg
Wind12.5 mph SE
Humidity99%
Visibility
Dew point61°
Sun, 1680° / 60°0Overcast
80 °Overcast

Petersburg, Sunday, 16 August

Overcast. High 80°, low 60°.

Pressure30.18 inHg
Wind11.9 mph N
Humidity61%
Visibility
Dew point57°
Mon, 1781° / 64°0Overcast
81 °Overcast

Petersburg, Monday, 17 August

Overcast. High 81°, low 64°.

Pressure30.06 inHg
Wind13.7 mph S
Humidity41%
Visibility
Dew point53°
Tue, 1892° / 61°0.06Light rain
92 °Light rain

Petersburg, Tuesday, 18 August

Light rain. High 92°, low 61°.

Pressure29.77 inHg
Wind16.6 mph W
Humidity47%
Visibility
Dew point60°
Wed, 1981° / 59°0Mostly clear
81 °Mostly clear

Petersburg, Wednesday, 19 August

Mostly clear. High 81°, low 59°.

Pressure29.97 inHg
Wind14.1 mph NW
Humidity47%
Visibility
Dew point53°
Thu, 2089° / 60°0Partly cloudy
89 °Partly cloudy

Petersburg, Thursday, 20 August

Partly cloudy. High 89°, low 60°.

Pressure29.91 inHg
Wind9 mph S
Humidity34%
Visibility
Dew point50°
Fri, 2195° / 66°0Partly cloudy
95 °Partly cloudy

Petersburg, Friday, 21 August

Partly cloudy. High 95°, low 66°.

Pressure29.65 inHg
Wind15.2 mph SW
Humidity30%
Visibility
Dew point53°
Sat, 2284° / 62°0Clear
84 °Clear

Petersburg, Saturday, 22 August

Clear. High 84°, low 62°.

Pressure29.97 inHg
Wind17.5 mph NW
Humidity30%
Visibility
Dew point45°
Sun, 2391° / 60°0Clear
91 °Clear

Petersburg, Sunday, 23 August

Clear. High 91°, low 60°.

Pressure30.12 inHg
Wind7.6 mph SE
Humidity25%
Visibility
Dew point44°
Mon, 2497° / 64°0.01Light rain
97 °Light rain

Petersburg, Monday, 24 August

Light rain. High 97°, low 64°.

Pressure30.03 inHg
Wind16.2 mph SW
Humidity23%
Visibility
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 63°0.11Climate normal
78 °Climate normal

Petersburg, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°
Average low63°
Average precipitation0.11 in
Chance of precipitation28%
Record high91° (2020)
Record low50° (1964)
Wed, 2679° / 63°0.14Climate normal
79 °Climate normal

Petersburg, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high79°
Average low63°
Average precipitation0.14 in
Chance of precipitation35%
Record high92° (1976)
Record low49° (2025)
Thu, 2778° / 63°0.13Climate normal
78 °Climate normal

Petersburg, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high78°
Average low63°
Average precipitation0.13 in
Chance of precipitation35%
Record high91° (2013)
Record low49° (1986)
Fri, 2878° / 62°0.11Climate normal
78 °Climate normal

Petersburg, Friday, 28 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation35%
Record high94° (1984)
Record low44° (1986)
Sat, 2978° / 62°0.06Climate normal
78 °Climate normal

Petersburg, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.06 in
Chance of precipitation17%
Record high93° (2012)
Record low48° (1988)
Sun, 3078° / 61°0.09Climate normal
78 °Climate normal

Petersburg, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high78°
Average low61°
Average precipitation0.09 in
Chance of precipitation30%
Record high96° (2012)
Record low47° (2009)
Mon, 3177° / 61°0.09Climate normal
77 °Climate normal

Petersburg, Monday, 31 August

Climate normal for this date — 60-year average.

Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation27%
Record high88° (1960)
Record low46° (1967)
Tue, 0177° / 60°0.06Climate normal
77 °Climate normal

Petersburg, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high77°
Average low60°
Average precipitation0.06 in
Chance of precipitation22%
Record high91° (2011)
Record low45° (1974)
Wed, 0277° / 61°0.11Climate normal
77 °Climate normal

Petersburg, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high77°
Average low61°
Average precipitation0.11 in
Chance of precipitation35%
Record high92° (2023)
Record low48° (1968)
Thu, 0376° / 60°0.09Climate normal
76 °Climate normal

Petersburg, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation27%
Record high91° (2023)
Record low39° (1974)
Fri, 0476° / 60°0.11Climate normal
76 °Climate normal

Petersburg, Friday, 4 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation25%
Record high92° (2023)
Record low43° (2025)
Sat, 0576° / 60°0.06Climate normal
76 °Climate normal

Petersburg, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.06 in
Chance of precipitation25%
Record high89° (1960)
Record low41° (1962)
Sun, 0677° / 59°0.07Climate normal
77 °Climate normal

Petersburg, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high77°
Average low59°
Average precipitation0.07 in
Chance of precipitation15%
Record high96° (1976)
Record low44° (2025)
Mon, 0775° / 58°0.08Climate normal
75 °Climate normal

Petersburg, Monday, 7 September

Climate normal for this date — 60-year average.

Average high75°
Average low58°
Average precipitation0.08 in
Chance of precipitation38%
Record high92° (1971)
Record low41° (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, MN 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, MN 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.