As of 04:39 CDT

Weather in Dennison, MN

44°

Dennison, Thursday, 8 October, 04:39

Overcast. Feels like 43°. High 67°, low 44°.

Pressure30.03 inHg

Wind3.4 mph S

Humidity70%

Visibility6.2 mi

Dew point35°

See detailed hourly forecast

Monthly outlook for Dennison, MN: average high 69.3°, average low 51.7°. That is 6.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 10 October (84.4°), the coolest 18 October (42.3°).

69.3°/51.7°

Average high / low

+6.6°

Above normal

4 / 4

Wet days / normal

1.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	70.7°	58.8°	+6.6°
18 October – 27 October	67°	54.7°	+6.8°
28 October – 6 November	at normal	49.5°	—

October records over 66 years

88°3 October 2025All-time high

17.8°27 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Cannon Falls (10 mi).

Fri, 0972° / 43°

72 °

Dennison, Friday, 9 October

Overcast. High 72°, low 43°.

Pressure30.03 inHg

Wind13.4 mph SE

Humidity38%

Visibility6.2 mi

Dew point42°

Sat, 1084° / 60°

84 °

Dennison, Saturday, 10 October

Clear. High 84°, low 60°.

Pressure29.80 inHg

Wind18.3 mph S

Humidity42%

Visibility6.2 mi

Dew point55°

Sun, 1184° / 66°

84 °

Dennison, Sunday, 11 October

Mostly clear. High 84°, low 66°.

Pressure29.83 inHg

Wind13.8 mph S

Humidity41%

Visibility6.2 mi

Dew point54°

Mon, 1279° / 63°

79 °

Dennison, Monday, 12 October

Clear. High 79°, low 63°.

Pressure29.68 inHg

Wind13.3 mph S

Humidity50%

Visibility—

Dew point57°

Tue, 1360° / 50°

60 °

Dennison, Tuesday, 13 October

Overcast. High 60°, low 50°.

Pressure30.06 inHg

Wind14.2 mph NW

Humidity52%

Visibility—

Dew point40°

Wed, 1465° / 47°

0.23

65 °

Dennison, Wednesday, 14 October

Light rain. High 65°, low 47°.

Pressure29.88 inHg

Wind26.7 mph S

Humidity70%

Visibility—

Dew point45°

Thu, 1582° / 65°

0.04

82 °

Dennison, Thursday, 15 October

Light rain. High 82°, low 65°.

Pressure29.47 inHg

Wind26 mph S

Humidity57%

Visibility—

Dew point64°

Fri, 1660° / 49°

60 °

Dennison, Friday, 16 October

Overcast. High 60°, low 49°.

Pressure30.18 inHg

Wind22.7 mph W

Humidity74%

Visibility—

Dew point41°

Sat, 1752° / 46°

52 °

Dennison, Saturday, 17 October

Overcast. High 52°, low 46°.

Pressure30.47 inHg

Wind7.7 mph NE

Humidity55%

Visibility—

Dew point34°

Sun, 1864° / 42°

64 °

Dennison, Sunday, 18 October

Clear. High 64°, low 42°.

Pressure30.18 inHg

Wind11.9 mph SW

Humidity48%

Visibility—

Dew point38°

Mon, 1956° / 50°

0.07

56 °

Dennison, Monday, 19 October

Light rain. High 56°, low 50°.

Pressure30.12 inHg

Wind6.6 mph SW

Humidity83%

Visibility—

Dew point51°

Tue, 2066° / 48°

66 °

Dennison, Tuesday, 20 October

Clear. High 66°, low 48°.

Pressure30.09 inHg

Wind7.7 mph W

Humidity48%

Visibility—

Dew point41°

Wed, 2172° / 50°

72 °

Dennison, Wednesday, 21 October

Partly cloudy. High 72°, low 50°.

Pressure29.83 inHg

Wind18 mph S

Humidity54%

Visibility—

Dew point49°

Thu, 2268° / 52°

0.75

68 °

Dennison, Thursday, 22 October

Heavy rain. High 68°, low 52°.

Pressure29.44 inHg

Wind22.4 mph S

Humidity76%

Visibility—

Dew point55°

Fri, 2377° / 50°

77 °

Dennison, Friday, 23 October

Partly cloudy. High 77°, low 50°.

Pressure29.59 inHg

Wind18.5 mph SW

Humidity56%

Visibility—

Dew point54°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 2454° / 40°

0.08

54 °

Dennison, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.08 in

Chance of precipitation32%

Record high76° (1989)

Record low21° (2020)

Sun, 2553° / 40°

0.03

53 °

Dennison, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.03 in

Chance of precipitation22%

Record high78° (1989)

Record low25° (2020)

Mon, 2654° / 40°

0.05

54 °

Dennison, Monday, 26 October

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.05 in

Chance of precipitation15%

Record high77° (1989)

Record low21° (1976)

Tue, 2753° / 40°

0.08

53 °

Dennison, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.08 in

Chance of precipitation27%

Record high70° (1989)

Record low18° (2020)

Wed, 2851° / 38°

0.07

51 °

Dennison, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high51°

Average low38°

Average precipitation0.07 in

Chance of precipitation22%

Record high72° (2016)

Record low24° (1967)

Thu, 2952° / 38°

0.07

52 °

Dennison, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high52°

Average low38°

Average precipitation0.07 in

Chance of precipitation27%

Record high79° (2024)

Record low24° (1988)

Fri, 3052° / 39°

0.06

52 °

Dennison, Friday, 30 October

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.06 in

Chance of precipitation27%

Record high75° (2024)

Record low22° (1988)

Sat, 3150° / 37°

0.11

50 °

Dennison, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high50°

Average low37°

Average precipitation0.11 in

Chance of precipitation37%

Record high70° (2000)

Record low21° (1996)

Sun, 0149° / 37°

0.1

49 °

Dennison, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high49°

Average low37°

Average precipitation0.1 in

Chance of precipitation27%

Record high71° (2000)

Record low22° (1984)

Mon, 0249° / 36°

0.07

49 °

Dennison, Monday, 2 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.07 in

Chance of precipitation22%

Record high73° (2022)

Record low14° (1991)

Tue, 0348° / 35°

0.06

48 °

Dennison, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high48°

Average low35°

Average precipitation0.06 in

Chance of precipitation23%

Record high71° (2008)

Record low11° (1991)

Wed, 0447° / 34°

0.05

47 °

Dennison, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°

Average low34°

Average precipitation0.05 in

Chance of precipitation23%

Record high70° (2008)

Record low-2° (1991)

Thu, 0548° / 34°

0.07

48 °

Dennison, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°

Average low34°

Average precipitation0.07 in

Chance of precipitation25%

Record high68° (2016)

Record low10° (1991)

Fri, 0647° / 35°

0.07

47 °

Dennison, Friday, 6 November

Climate normal for this date — 60-year average.

Average high47°

Average low35°

Average precipitation0.07 in

Chance of precipitation25%

Record high71° (2020)

Record low3° (1991)

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 Dennison, 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 Dennison, 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.