Monthly outlook for Lockport, IL: average high 66.3°, average low 52°. That is 3.2° above the climate normal for October. Precipitation is expected on 4 days (about 2.4 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 12 October (85.4°), the coolest 18 October (38.7°).
66.3°/52°
Average high / low
+3.2°
Above normal
4 / 5
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
67.5°
61.6°
+3.3°
22 October – 31 October
64.3°
58°
+3.5°
1 November – 10 November
at normal
53.3°
—
October records over 66 years
87.6°7 October 2007All-time high
22.6°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Joliet (8 mi).
Tue, 1383° / 66°0.01
83 °
Lockport, Tuesday, 13 October
Light rain. High 83°, low 66°.
Pressure29.83 inHg
Wind9.9 mph W
Humidity62%
Visibility6.2 mi
Dew point64°
Wed, 1469° / 58°0.41
69 °
Lockport, Wednesday, 14 October
Heavy rain. High 69°, low 58°.
Pressure30.06 inHg
Wind7.7 mph NE
Humidity70%
Visibility6.2 mi
Dew point59°
Thu, 1558° / 56°1.42
58 °
Lockport, Thursday, 15 October
Heavy rain. High 58°, low 56°.
Pressure30.12 inHg
Wind7 mph E
Humidity96%
Visibility1.4 mi
Dew point56°
Fri, 1656° / 47°0
56 °
Lockport, Friday, 16 October
Partly cloudy. High 56°, low 47°.
Pressure30.36 inHg
Wind16.1 mph N
Humidity49%
Visibility—
Dew point36°
Sat, 1758° / 40°0
58 °
Lockport, Saturday, 17 October
Clear. High 58°, low 40°.
Pressure30.45 inHg
Wind7 mph SW
Humidity43%
Visibility—
Dew point33°
Sun, 1859° / 39°0
59 °
Lockport, Sunday, 18 October
Clear. High 59°, low 39°.
Pressure30.30 inHg
Wind13.7 mph SW
Humidity34%
Visibility—
Dew point26°
Mon, 1967° / 46°0
67 °
Lockport, Monday, 19 October
Overcast. High 67°, low 46°.
Pressure30.24 inHg
Wind11.2 mph SW
Humidity47%
Visibility—
Dew point43°
Tue, 2067° / 58°0
67 °
Lockport, Tuesday, 20 October
Light rain. High 67°, low 58°.
Pressure30.27 inHg
Wind4.9 mph S
Humidity65%
Visibility—
Dew point53°
Wed, 2172° / 56°0
72 °
Lockport, Wednesday, 21 October
Clear. High 72°, low 56°.
Pressure30.33 inHg
Wind6.5 mph SE
Humidity56%
Visibility—
Dew point52°
Thu, 2273° / 57°0
73 °
Lockport, Thursday, 22 October
Mostly clear. High 73°, low 57°.
Pressure30.24 inHg
Wind10.3 mph S
Humidity48%
Visibility—
Dew point49°
Fri, 2366° / 54°0.21
66 °
Lockport, Friday, 23 October
Rain. High 66°, low 54°.
Pressure30.21 inHg
Wind10.8 mph NW
Humidity44%
Visibility—
Dew point43°
Sat, 2459° / 48°0
59 °
Lockport, Saturday, 24 October
Clear. High 59°, low 48°.
Pressure30.39 inHg
Wind8.9 mph SE
Humidity42%
Visibility—
Dew point33°
Sun, 2568° / 52°0.35
68 °
Lockport, Sunday, 25 October
Light rain. High 68°, low 52°.
Pressure29.80 inHg
Wind15.6 mph SW
Humidity70%
Visibility—
Dew point51°
Mon, 2659° / 50°0
59 °
Lockport, Monday, 26 October
Overcast. High 59°, low 50°.
Pressure30.06 inHg
Wind12.8 mph N
Humidity60%
Visibility—
Dew point43°
Tue, 2761° / 46°0
61 °
Lockport, Tuesday, 27 October
Clear. High 61°, low 46°.
Pressure30.12 inHg
Wind3.8 mph NW
Humidity46%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2856° / 42°0.06
56 °
Lockport, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.06 in
Chance of precipitation22%
Record high75° (1999)
Record low26° (1976)
Thu, 2957° / 42°0.06
57 °
Lockport, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.06 in
Chance of precipitation22%
Record high79° (2024)
Record low25° (1980)
Fri, 3059° / 43°0.11
59 °
Lockport, Friday, 30 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.11 in
Chance of precipitation25%
Record high78° (1971)
Record low24° (1980)
Sat, 3157° / 44°0.14
57 °
Lockport, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.14 in
Chance of precipitation37%
Record high75° (1974)
Record low27° (1988)
Sun, 0156° / 42°0.17
56 °
Lockport, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.17 in
Chance of precipitation38%
Record high75° (2016)
Record low21° (2019)
Mon, 0255° / 41°0.1
55 °
Lockport, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.1 in
Chance of precipitation35%
Record high75° (1961)
Record low24° (1991)
Tue, 0354° / 39°0.07
54 °
Lockport, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.07 in
Chance of precipitation23%
Record high74° (1987)
Record low18° (1991)
Wed, 0454° / 41°0.09
54 °
Lockport, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.09 in
Chance of precipitation25%
Record high72° (1978)
Record low18° (1991)
Thu, 0554° / 40°0.11
54 °
Lockport, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.11 in
Chance of precipitation28%
Record high76° (1978)
Record low18° (1991)
Fri, 0653° / 38°0.09
53 °
Lockport, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.09 in
Chance of precipitation32%
Record high72° (1975)
Record low24° (1973)
Sat, 0752° / 38°0.06
52 °
Lockport, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation20%
Record high70° (2020)
Record low18° (1991)
Sun, 0852° / 38°0.06
52 °
Lockport, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation18%
Record high74° (2020)
Record low12° (1991)
Mon, 0953° / 38°0.13
53 °
Lockport, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.13 in
Chance of precipitation38%
Record high73° (1999)
Record low17° (1991)
Tue, 1051° / 37°0.13
51 °
Lockport, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.13 in
Chance of precipitation35%
Record high73° (2020)
Record low18° (2018)
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 Lockport, 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 Lockport, 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.