Monthly outlook for Lynn, WI: average high 57.6°, average low 40.4°. That is 1.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (80.4°), the coolest 17 October (24.1°).
57.6°/40.4°
Average high / low
+1.7°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
60.1°
55.8°
+2.4°
21 October – 30 October
53.4°
51.9°
+0.8°
31 October – 9 November
at normal
46.6°
—
October records over 66 years
84.9°1 October 2023All-time high
19.2°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Granton (3 mi).
Mon, 1280° / 63°0.02
80 °
Lynn, Monday, 12 October
Light rain. High 80°, low 63°.
Pressure29.74 inHg
Wind7.3 mph S
Humidity71%
Visibility6.2 mi
Dew point63°
Tue, 1370° / 57°0
70 °
Lynn, Tuesday, 13 October
Overcast. High 70°, low 57°.
Pressure29.85 inHg
Wind10.2 mph NW
Humidity74%
Visibility6.2 mi
Dew point52°
Wed, 1458° / 48°0
58 °
Lynn, Wednesday, 14 October
Overcast. High 58°, low 48°.
Pressure30.18 inHg
Wind9.6 mph NW
Humidity60%
Visibility6.2 mi
Dew point42°
Thu, 1560° / 42°0
60 °
Lynn, Thursday, 15 October
Overcast. High 60°, low 42°.
Pressure30.33 inHg
Wind9.8 mph W
Humidity57%
Visibility—
Dew point41°
Fri, 1650° / 32°0.04
50 °
Lynn, Friday, 16 October
Snow. High 50°, low 32°.
Pressure30.42 inHg
Wind22.2 mph N
Humidity57%
Visibility—
Dew point34°
Sat, 1739° / 24°0
39 °
Lynn, Saturday, 17 October
Overcast. High 39°, low 24°.
Pressure30.56 inHg
Wind16.1 mph NW
Humidity45%
Visibility—
Dew point16°
Sun, 1846° / 25°0
46 °
Lynn, Sunday, 18 October
Overcast. High 46°, low 25°.
Pressure30.45 inHg
Wind15.9 mph SW
Humidity29%
Visibility—
Dew point12°
Mon, 1956° / 33°0
56 °
Lynn, Monday, 19 October
Clear. High 56°, low 33°.
Pressure30.30 inHg
Wind9.2 mph SW
Humidity43%
Visibility—
Dew point29°
Tue, 2062° / 39°0
62 °
Lynn, Tuesday, 20 October
Overcast. High 62°, low 39°.
Pressure30.21 inHg
Wind10.6 mph S
Humidity42%
Visibility—
Dew point34°
Wed, 2165° / 45°0
65 °
Lynn, Wednesday, 21 October
Overcast. High 65°, low 45°.
Pressure29.85 inHg
Wind14.4 mph SW
Humidity47%
Visibility—
Dew point38°
Thu, 2253° / 39°0
53 °
Lynn, Thursday, 22 October
Overcast. High 53°, low 39°.
Pressure30.15 inHg
Wind14.5 mph NW
Humidity54%
Visibility—
Dew point36°
Fri, 2351° / 38°0
51 °
Lynn, Friday, 23 October
Overcast. High 51°, low 38°.
Pressure30.33 inHg
Wind9.7 mph NW
Humidity48%
Visibility—
Dew point30°
Sat, 2452° / 36°0
52 °
Lynn, Saturday, 24 October
Overcast. High 52°, low 36°.
Pressure30.30 inHg
Wind7.6 mph W
Humidity54%
Visibility—
Dew point34°
Sun, 2549° / 30°0
49 °
Lynn, Sunday, 25 October
Overcast. High 49°, low 30°.
Pressure30.33 inHg
Wind7.1 mph SE
Humidity43%
Visibility—
Dew point24°
Mon, 2650° / 39°0.01
50 °
Lynn, Monday, 26 October
Light rain. High 50°, low 39°.
Pressure29.94 inHg
Wind10.8 mph SE
Humidity91%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2752° / 38°0.07
52 °
Lynn, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.07 in
Chance of precipitation22%
Record high67° (1989)
Record low21° (2020)
Wed, 2850° / 37°0.08
50 °
Lynn, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.08 in
Chance of precipitation23%
Record high65° (2024)
Record low25° (1969)
Thu, 2951° / 37°0.08
51 °
Lynn, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.08 in
Chance of precipitation28%
Record high77° (2024)
Record low23° (1988)
Fri, 3051° / 37°0.08
51 °
Lynn, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.08 in
Chance of precipitation32%
Record high73° (2024)
Record low19° (1988)
Sat, 3149° / 37°0.09
49 °
Lynn, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation37%
Record high67° (2000)
Record low22° (1996)
Sun, 0148° / 36°0.14
48 °
Lynn, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.14 in
Chance of precipitation33%
Record high70° (2000)
Record low20° (2023)
Mon, 0248° / 35°0.06
48 °
Lynn, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high70° (2022)
Record low14° (1991)
Tue, 0347° / 34°0.07
47 °
Lynn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation20%
Record high69° (2008)
Record low12° (1991)
Wed, 0447° / 34°0.06
47 °
Lynn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (2008)
Record low5° (1991)
Thu, 0546° / 34°0.09
46 °
Lynn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.09 in
Chance of precipitation33%
Record high66° (2016)
Record low11° (1991)
Fri, 0646° / 33°0.06
46 °
Lynn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2020)
Record low4° (1991)
Sat, 0745° / 33°0.03
45 °
Lynn, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.03 in
Chance of precipitation18%
Record high68° (2020)
Record low-10° (1991)
Sun, 0845° / 33°0.04
45 °
Lynn, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2020)
Record low-9° (1991)
Mon, 0944° / 33°0.09
44 °
Lynn, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.09 in
Chance of precipitation37%
Record high69° (1999)
Record low13° (2017)
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 Lynn, 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 Lynn, 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.