As of 18:05 CDT

Weather in Grellton, WI

77°Current weather

Grellton, Sunday, 11 October, 18:05

Clear. Feels like 77°. High 78°, low 54°.

Pressure29.88 inHg
Wind5.7 mph S
Humidity50%
Visibility6.2 mi
Dew point58°

Monthly outlook for Grellton, WI: average high 62°, average low 48.7°. That is 2.7° above the climate normal for October. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (84.5°), the coolest 18 October (32°).

62°/48.7°
Average high / low
+2.7°
Above normal
5 / 5
Wet days / normal
2.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 October – 20 October63.8°58.4°+3°
21 October – 30 October59°54.6°+2.5°
31 October – 9 Novemberat normal49.7°—

October records over 66 years

84.9°3 October 2025All-time high
20.7°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Reeseville (12 mi).

Mon, 1285° / 61°0Partly cloudy
85 °Partly cloudy

Grellton, Monday, 12 October

Partly cloudy. High 85°, low 61°.

Pressure29.77 inHg
Wind11.1 mph SW
Humidity63%
Visibility6.2 mi
Dew point64°
Tue, 1373° / 61°0Overcast
73 °Overcast

Grellton, Tuesday, 13 October

Overcast. High 73°, low 61°.

Pressure29.83 inHg
Wind10.4 mph NW
Humidity70%
Visibility6.2 mi
Dew point59°
Wed, 1465° / 56°0.03Light rain
65 °Light rain

Grellton, Wednesday, 14 October

Light rain. High 65°, low 56°.

Pressure30.12 inHg
Wind8.3 mph N
Humidity64%
Visibility6.2 mi
Dew point52°
Thu, 1558° / 53°1.09Heavy rain
58 °Heavy rain

Grellton, Thursday, 15 October

Heavy rain. High 58°, low 53°.

Pressure30.09 inHg
Wind6.9 mph E
Humidity94%
Visibility2.5 mi
Dew point54°
Fri, 1656° / 45°0.01Light rain
56 °Light rain

Grellton, Friday, 16 October

Light rain. High 56°, low 45°.

Pressure30.45 inHg
Wind20.2 mph N
Humidity48%
Visibility—
Dew point35°
Sat, 1748° / 34°0Clear
48 °Clear

Grellton, Saturday, 17 October

Clear. High 48°, low 34°.

Pressure30.59 inHg
Wind8.5 mph W
Humidity38%
Visibility—
Dew point22°
Sun, 1854° / 32°0Clear
54 °Clear

Grellton, Sunday, 18 October

Clear. High 54°, low 32°.

Pressure30.30 inHg
Wind23.2 mph SW
Humidity39%
Visibility—
Dew point26°
Mon, 1961° / 42°0Clear
61 °Clear

Grellton, Monday, 19 October

Clear. High 61°, low 42°.

Pressure30.30 inHg
Wind15.2 mph SW
Humidity44%
Visibility—
Dew point36°
Tue, 2061° / 46°0Overcast
61 °Overcast

Grellton, Tuesday, 20 October

Overcast. High 61°, low 46°.

Pressure30.33 inHg
Wind9.5 mph SE
Humidity43%
Visibility—
Dew point37°
Wed, 2164° / 54°0.29Rain
64 °Rain

Grellton, Wednesday, 21 October

Rain. High 64°, low 54°.

Pressure30.12 inHg
Wind18.1 mph S
Humidity64%
Visibility—
Dew point50°
Thu, 2267° / 60°0.04Light rain
67 °Light rain

Grellton, Thursday, 22 October

Light rain. High 67°, low 60°.

Pressure30.15 inHg
Wind13.8 mph S
Humidity81%
Visibility—
Dew point58°
Fri, 2364° / 60°0.4Light rain
64 °Light rain

Grellton, Friday, 23 October

Light rain. High 64°, low 60°.

Pressure30.00 inHg
Wind19.2 mph S
Humidity86%
Visibility—
Dew point59°
Sat, 2461° / 45°0.26Light rain
61 °Light rain

Grellton, Saturday, 24 October

Light rain. High 61°, low 45°.

Pressure30.03 inHg
Wind13.2 mph NW
Humidity86%
Visibility—
Dew point45°
Sun, 2550° / 40°0Overcast
50 °Overcast

Grellton, Sunday, 25 October

Overcast. High 50°, low 40°.

Pressure30.12 inHg
Wind11.9 mph W
Humidity58%
Visibility—
Dew point33°
Mon, 2649° / 36°0Partly cloudy
49 °Partly cloudy

Grellton, Monday, 26 October

Partly cloudy. High 49°, low 36°.

Pressure29.91 inHg
Wind20.1 mph NW
Humidity49%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2754° / 40°0.07Climate normal
54 °Climate normal

Grellton, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°
Average low40°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (2014)
Record low25° (2020)
Wed, 2853° / 40°0.05Climate normal
53 °Climate normal

Grellton, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high53°
Average low40°
Average precipitation0.05 in
Chance of precipitation27%
Record high68° (1974)
Record low25° (1969)
Thu, 2953° / 39°0.05Climate normal
53 °Climate normal

Grellton, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°
Average low39°
Average precipitation0.05 in
Chance of precipitation15%
Record high78° (2024)
Record low24° (1980)
Fri, 3055° / 40°0.09Climate normal
55 °Climate normal

Grellton, Friday, 30 October

Climate normal for this date — 60-year average.

Average high55°
Average low40°
Average precipitation0.09 in
Chance of precipitation30%
Record high76° (2024)
Record low21° (1988)
Sat, 3153° / 40°0.09Climate normal
53 °Climate normal

Grellton, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high53°
Average low40°
Average precipitation0.09 in
Chance of precipitation33%
Record high69° (1971)
Record low23° (2019)
Sun, 0152° / 39°0.2Climate normal
52 °Climate normal

Grellton, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high52°
Average low39°
Average precipitation0.2 in
Chance of precipitation38%
Record high70° (2000)
Record low15° (2019)
Mon, 0251° / 38°0.12Climate normal
51 °Climate normal

Grellton, Monday, 2 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.12 in
Chance of precipitation33%
Record high71° (1961)
Record low19° (1991)
Tue, 0350° / 37°0.05Climate normal
50 °Climate normal

Grellton, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°
Average low37°
Average precipitation0.05 in
Chance of precipitation27%
Record high70° (2008)
Record low16° (1991)
Wed, 0449° / 37°0.08Climate normal
49 °Climate normal

Grellton, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.08 in
Chance of precipitation25%
Record high71° (2008)
Record low13° (1991)
Thu, 0549° / 37°0.09Climate normal
49 °Climate normal

Grellton, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high68° (2015)
Record low18° (1991)
Fri, 0649° / 35°0.08Climate normal
49 °Climate normal

Grellton, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.08 in
Chance of precipitation30%
Record high69° (1975)
Record low15° (1991)
Sat, 0748° / 35°0.03Climate normal
48 °Climate normal

Grellton, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.03 in
Chance of precipitation17%
Record high68° (2020)
Record low7° (1991)
Sun, 0848° / 35°0.04Climate normal
48 °Climate normal

Grellton, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (2020)
Record low6° (2019)
Mon, 0948° / 35°0.1Climate normal
48 °Climate normal

Grellton, Monday, 9 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.1 in
Chance of precipitation35%
Record high73° (2020)
Record low19° (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 Grellton, WI 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 Grellton, WI 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.