Monthly outlook for Galena, IL: average high 61.3°, average low 45.9°. That is 2.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 21 October (68.9°), the coolest 26 October (35.8°).
61.3°/45.9°
Average high / low
+2.6°
Above normal
4 / 4
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
63.2°
58°
+2.9°
24 October – 2 November
58.1°
53.8°
+2.4°
3 November – 12 November
at normal
48.2°
—
October records over 66 years
85.6°3 October 2025All-time high
20.7°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Benton (10 mi).
Thu, 1565° / 55°0.85
65 °
Galena, Thursday, 15 October
Heavy rain. High 65°, low 55°.
Pressure29.97 inHg
Wind7.6 mph SE
Humidity96%
Visibility2.5 mi
Dew point57°
Fri, 1655° / 44°0.08
55 °
Galena, Friday, 16 October
Light rain. High 55°, low 44°.
Pressure30.15 inHg
Wind17.8 mph NW
Humidity85%
Visibility2.0 mi
Dew point45°
Sat, 1756° / 36°0
56 °
Galena, Saturday, 17 October
Clear. High 56°, low 36°.
Pressure30.56 inHg
Wind4.9 mph SW
Humidity49%
Visibility6.2 mi
Dew point34°
Sun, 1861° / 41°0
61 °
Galena, Sunday, 18 October
Clear. High 61°, low 41°.
Pressure30.42 inHg
Wind11.2 mph SW
Humidity55%
Visibility6.2 mi
Dew point39°
Mon, 1963° / 41°0
63 °
Galena, Monday, 19 October
Clear. High 63°, low 41°.
Pressure30.39 inHg
Wind4.9 mph S
Humidity57%
Visibility—
Dew point44°
Tue, 2066° / 43°0
66 °
Galena, Tuesday, 20 October
Clear. High 66°, low 43°.
Pressure30.33 inHg
Wind5.5 mph SE
Humidity56%
Visibility—
Dew point45°
Wed, 2169° / 50°0.01
69 °
Galena, Wednesday, 21 October
Light rain. High 69°, low 50°.
Pressure30.15 inHg
Wind12.5 mph S
Humidity62%
Visibility—
Dew point53°
Thu, 2265° / 61°0.12
65 °
Galena, Thursday, 22 October
Light rain. High 65°, low 61°.
Pressure29.91 inHg
Wind11.6 mph S
Humidity93%
Visibility—
Dew point62°
Fri, 2369° / 55°0
69 °
Galena, Friday, 23 October
Partly cloudy. High 69°, low 55°.
Pressure30.06 inHg
Wind14.1 mph SE
Humidity71%
Visibility—
Dew point56°
Sat, 2466° / 48°0.37
66 °
Galena, Saturday, 24 October
Rain. High 66°, low 48°.
Pressure29.83 inHg
Wind20.7 mph SW
Humidity88%
Visibility—
Dew point62°
Sun, 2555° / 40°0.01
55 °
Galena, Sunday, 25 October
Light rain. High 55°, low 40°.
Pressure30.33 inHg
Wind14.4 mph W
Humidity46%
Visibility—
Dew point32°
Mon, 2653° / 36°0
53 °
Galena, Monday, 26 October
Clear. High 53°, low 36°.
Pressure30.39 inHg
Wind8.3 mph NW
Humidity42%
Visibility—
Dew point27°
Tue, 2757° / 40°0
57 °
Galena, Tuesday, 27 October
Overcast. High 57°, low 40°.
Pressure30.18 inHg
Wind18.1 mph SW
Humidity49%
Visibility—
Dew point35°
Wed, 2857° / 44°0
57 °
Galena, Wednesday, 28 October
Overcast. High 57°, low 44°.
Pressure30.03 inHg
Wind14.1 mph SW
Humidity51%
Visibility—
Dew point37°
Thu, 2962° / 44°0
62 °
Galena, Thursday, 29 October
Mostly clear. High 62°, low 44°.
Pressure29.97 inHg
Wind11.5 mph SW
Humidity67%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3055° / 40°0.1
55 °
Galena, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.1 in
Chance of precipitation33%
Record high75° (2024)
Record low21° (1988)
Sat, 3153° / 40°0.12
53 °
Galena, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.12 in
Chance of precipitation32%
Record high69° (1968)
Record low23° (2019)
Sun, 0152° / 39°0.2
52 °
Galena, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.2 in
Chance of precipitation37%
Record high73° (2000)
Record low15° (2019)
Mon, 0251° / 38°0.11
51 °
Galena, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.11 in
Chance of precipitation33%
Record high69° (2022)
Record low18° (1991)
Tue, 0351° / 37°0.06
51 °
Galena, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation23%
Record high70° (1987)
Record low14° (1991)
Wed, 0450° / 38°0.1
50 °
Galena, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.1 in
Chance of precipitation28%
Record high69° (2008)
Record low13° (1991)
Thu, 0550° / 37°0.12
50 °
Galena, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.12 in
Chance of precipitation23%
Record high67° (1978)
Record low19° (1991)
Fri, 0650° / 36°0.07
50 °
Galena, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.07 in
Chance of precipitation25%
Record high68° (2020)
Record low16° (1991)
Sat, 0749° / 35°0.03
49 °
Galena, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.03 in
Chance of precipitation22%
Record high67° (2020)
Record low5° (1991)
Sun, 0849° / 35°0.05
49 °
Galena, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.05 in
Chance of precipitation18%
Record high70° (1999)
Record low6° (1991)
Mon, 0948° / 36°0.1
48 °
Galena, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.1 in
Chance of precipitation35%
Record high70° (2020)
Record low16° (1991)
Tue, 1047° / 34°0.12
47 °
Galena, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.12 in
Chance of precipitation30%
Record high70° (2022)
Record low14° (2017)
Wed, 1145° / 31°0.08
45 °
Galena, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.08 in
Chance of precipitation28%
Record high69° (1964)
Record low13° (2019)
Thu, 1243° / 31°0.06
43 °
Galena, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.06 in
Chance of precipitation30%
Record high64° (1964)
Record low3° (2019)
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 Galena, IL 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 Galena, IL 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.