Monthly outlook for Rock Dell, MN: average high 77.3°, average low 59.5°. That is 0° below the climate normal for August. Precipitation is expected on 5 days (about 3.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 18 August (85.8°), the coolest 21 August (52.3°).
77.3°/59.5°
Average high / low
−0°
Below normal
5 / 5
Wet days / normal
3.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
77.5°
77.6°
-0°
18 August – 27 August
76.9°
77°
-0.1°
28 August – 6 September
at normal
75.7°
—
August records over 66 years
98.1°16 August 1988All-time high
41.9°21 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Rochester (10 mi).
Sun, 0977° / 65°1.58
77 °
Rock Dell, Sunday, 9 August
Heavy rain. High 77°, low 65°.
Pressure29.85 inHg
Wind10 mph SE
Humidity91%
Visibility6.2 mi
Dew point67°
Mon, 1083° / 68°0.01
83 °
Rock Dell, Monday, 10 August
Light rain. High 83°, low 68°.
Pressure29.91 inHg
Wind9.5 mph SE
Humidity77%
Visibility6.2 mi
Dew point69°
Tue, 1183° / 62°1.05
83 °
Rock Dell, Tuesday, 11 August
Heavy rain. High 83°, low 62°.
Pressure29.83 inHg
Wind6.1 mph N
Humidity73%
Visibility6.2 mi
Dew point67°
Wed, 1281° / 62°0
81 °
Rock Dell, Wednesday, 12 August
Partly cloudy. High 81°, low 62°.
Pressure29.94 inHg
Wind8.2 mph N
Humidity52%
Visibility6.2 mi
Dew point58°
Thu, 1367° / 60°0
67 °
Rock Dell, Thursday, 13 August
Light rain. High 67°, low 60°.
Pressure30.06 inHg
Wind7.2 mph E
Humidity77%
Visibility—
Dew point56°
Fri, 1477° / 56°0
77 °
Rock Dell, Friday, 14 August
Mostly clear. High 77°, low 56°.
Pressure30.12 inHg
Wind5.2 mph NW
Humidity58%
Visibility—
Dew point57°
Sat, 1571° / 56°0
71 °
Rock Dell, Saturday, 15 August
Overcast. High 71°, low 56°.
Pressure30.24 inHg
Wind11.9 mph S
Humidity65%
Visibility—
Dew point57°
Sun, 1675° / 54°0
75 °
Rock Dell, Sunday, 16 August
Overcast. High 75°, low 54°.
Pressure30.12 inHg
Wind7.4 mph S
Humidity71%
Visibility—
Dew point60°
Mon, 1781° / 63°0.09
81 °
Rock Dell, Monday, 17 August
Light rain. High 81°, low 63°.
Pressure30.03 inHg
Wind8.7 mph S
Humidity72%
Visibility—
Dew point67°
Tue, 1886° / 68°0.08
86 °
Rock Dell, Tuesday, 18 August
Light rain. High 86°, low 68°.
Pressure29.88 inHg
Wind16.7 mph SW
Humidity61%
Visibility—
Dew point66°
Wed, 1976° / 59°0
76 °
Rock Dell, Wednesday, 19 August
Overcast. High 76°, low 59°.
Pressure30.03 inHg
Wind15.1 mph N
Humidity53%
Visibility—
Dew point51°
Thu, 2068° / 54°0
68 °
Rock Dell, Thursday, 20 August
Overcast. High 68°, low 54°.
Pressure30.12 inHg
Wind10.8 mph W
Humidity60%
Visibility—
Dew point52°
Fri, 2174° / 52°0
74 °
Rock Dell, Friday, 21 August
Mostly clear. High 74°, low 52°.
Pressure30.06 inHg
Wind11.1 mph SE
Humidity58%
Visibility—
Dew point54°
Sat, 2280° / 58°0.34
80 °
Rock Dell, Saturday, 22 August
Rain. High 80°, low 58°.
Pressure29.80 inHg
Wind13.6 mph S
Humidity89%
Visibility—
Dew point62°
Sun, 2377° / 58°0
77 °
Rock Dell, Sunday, 23 August
Clear. High 77°, low 58°.
Pressure29.94 inHg
Wind13.6 mph NW
Humidity56%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2477° / 62°0.17
77 °
Rock Dell, Monday, 24 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.17 in
Chance of precipitation30%
Record high91° (2020)
Record low46° (1987)
Tue, 2578° / 62°0.12
78 °
Rock Dell, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.12 in
Chance of precipitation35%
Record high91° (2020)
Record low48° (1979)
Wed, 2678° / 63°0.13
78 °
Rock Dell, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.13 in
Chance of precipitation37%
Record high92° (2024)
Record low49° (1964)
Thu, 2777° / 62°0.13
77 °
Rock Dell, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.13 in
Chance of precipitation35%
Record high91° (2013)
Record low49° (1971)
Fri, 2877° / 62°0.13
77 °
Rock Dell, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.13 in
Chance of precipitation40%
Record high91° (1984)
Record low43° (1986)
Sat, 2977° / 61°0.12
77 °
Rock Dell, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.12 in
Chance of precipitation25%
Record high90° (2012)
Record low48° (1965)
Sun, 3076° / 61°0.1
76 °
Rock Dell, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.1 in
Chance of precipitation30%
Record high94° (2012)
Record low49° (2009)
Mon, 3176° / 60°0.07
76 °
Rock Dell, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.07 in
Chance of precipitation22%
Record high87° (1960)
Record low44° (2009)
Tue, 0176° / 60°0.05
76 °
Rock Dell, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.05 in
Chance of precipitation22%
Record high90° (2011)
Record low44° (1974)
Wed, 0276° / 60°0.09
76 °
Rock Dell, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation35%
Record high92° (2023)
Record low46° (1974)
Thu, 0375° / 60°0.15
75 °
Rock Dell, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.15 in
Chance of precipitation32%
Record high93° (2023)
Record low41° (1974)
Fri, 0475° / 59°0.13
75 °
Rock Dell, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.13 in
Chance of precipitation28%
Record high92° (2023)
Record low42° (1974)
Sat, 0575° / 59°0.1
75 °
Rock Dell, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.1 in
Chance of precipitation28%
Record high89° (2023)
Record low40° (1962)
Sun, 0674° / 59°0.11
74 °
Rock Dell, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.11 in
Chance of precipitation27%
Record high88° (1960)
Record low44° (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 Rock Dell, 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 Rock Dell, 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.