Monthly outlook for Merrillville, IN: average high 50.6°, average low 39.3°. That is 2.3° above the climate normal for November. Precipitation is expected on 5 days (about 3.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 November (64.9°), the coolest 27 November (29.5°).
50.6°/39.3°
Average high / low
+2.3°
Above normal
5 / 5
Wet days / normal
3.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 November – 21 November
51.5°
47.5°
+2.2°
22 November – 1 December
49°
43.3°
+3.2°
2 December – 11 December
at normal
38.4°
—
November records over 66 years
75.6°5 November 1978All-time high
3.2°12 November 2019All-time low
Climate normals and records are computed from the nearest reference point — Salt Creek Commons (10 mi).
Fri, 1340° / 37°0.61
40 °
Merrillville, Friday, 13 November
Rain. High 40°, low 37°.
Pressure30.06 inHg
Wind7.1 mph N
Humidity90%
Visibility3.6 mi
Dew point36°
Sat, 1444° / 36°0.09
44 °
Merrillville, Saturday, 14 November
Light rain. High 44°, low 36°.
Pressure30.27 inHg
Wind6.2 mph N
Humidity65%
Visibility6.2 mi
Dew point32°
Sun, 1546° / 32°0
46 °
Merrillville, Sunday, 15 November
Mostly clear. High 46°, low 32°.
Pressure30.47 inHg
Wind2.7 mph NW
Humidity59%
Visibility6.2 mi
Dew point32°
Mon, 1649° / 31°0
49 °
Merrillville, Monday, 16 November
Clear. High 49°, low 31°.
Pressure30.53 inHg
Wind5.8 mph SW
Humidity54%
Visibility6.2 mi
Dew point32°
Tue, 1752° / 33°0
52 °
Merrillville, Tuesday, 17 November
Partly cloudy. High 52°, low 33°.
Pressure30.50 inHg
Wind6.3 mph SW
Humidity57%
Visibility—
Dew point34°
Wed, 1855° / 35°0
55 °
Merrillville, Wednesday, 18 November
Mostly clear. High 55°, low 35°.
Pressure30.33 inHg
Wind11 mph S
Humidity55%
Visibility—
Dew point35°
Thu, 1962° / 47°0
62 °
Merrillville, Thursday, 19 November
Overcast. High 62°, low 47°.
Pressure30.09 inHg
Wind13.8 mph SW
Humidity61%
Visibility—
Dew point44°
Fri, 2058° / 47°0
58 °
Merrillville, Friday, 20 November
Overcast. High 58°, low 47°.
Pressure30.36 inHg
Wind6.8 mph S
Humidity52%
Visibility—
Dew point38°
Sat, 2164° / 51°0
64 °
Merrillville, Saturday, 21 November
Overcast. High 64°, low 51°.
Pressure30.18 inHg
Wind12.1 mph SW
Humidity49%
Visibility—
Dew point42°
Sun, 2265° / 52°0
65 °
Merrillville, Sunday, 22 November
Overcast. High 65°, low 52°.
Pressure30.03 inHg
Wind10.1 mph S
Humidity55%
Visibility—
Dew point46°
Mon, 2358° / 56°0.24
58 °
Merrillville, Monday, 23 November
Light rain. High 58°, low 56°.
Pressure29.83 inHg
Wind15.7 mph S
Humidity86%
Visibility—
Dew point53°
Tue, 2456° / 40°1.72
56 °
Merrillville, Tuesday, 24 November
Heavy rain. High 56°, low 40°.
Pressure29.74 inHg
Wind16.6 mph N
Humidity83%
Visibility—
Dew point41°
Wed, 2538° / 34°0.01
38 °
Merrillville, Wednesday, 25 November
Snow. High 38°, low 34°.
Pressure30.12 inHg
Wind16.6 mph N
Humidity42%
Visibility—
Dew point16°
Thu, 2635° / 30°0
35 °
Merrillville, Thursday, 26 November
Clear. High 35°, low 30°.
Pressure30.42 inHg
Wind9.1 mph NW
Humidity30%
Visibility—
Dew point6°
Fri, 2741° / 29°0
41 °
Merrillville, Friday, 27 November
Overcast. High 41°, low 29°.
Pressure30.33 inHg
Wind15.3 mph S
Humidity40%
Visibility—
Dew point16°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2842° / 30°0.13
42 °
Merrillville, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.13 in
Chance of precipitation35%
Record high64° (1990)
Record low13° (2018)
Sun, 2942° / 30°0.08
42 °
Merrillville, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.08 in
Chance of precipitation35%
Record high66° (1998)
Record low11° (1976)
Mon, 3043° / 31°0.09
43 °
Merrillville, Monday, 30 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation37%
Record high64° (1998)
Record low13° (1976)
Tue, 0140° / 29°0.14
40 °
Merrillville, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.14 in
Chance of precipitation42%
Record high66° (1970)
Record low13° (2024)
Wed, 0241° / 29°0.07
41 °
Merrillville, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.07 in
Chance of precipitation35%
Record high69° (1982)
Record low9° (1976)
Thu, 0341° / 29°0.1
41 °
Merrillville, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.1 in
Chance of precipitation38%
Record high68° (2012)
Record low5° (1976)
Fri, 0440° / 29°0.07
40 °
Merrillville, Friday, 4 December
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.07 in
Chance of precipitation32%
Record high64° (1998)
Record low3° (1991)
Sat, 0540° / 28°0.09
40 °
Merrillville, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.09 in
Chance of precipitation30%
Record high66° (2001)
Record low2° (2025)
Sun, 0638° / 27°0.07
38 °
Merrillville, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.07 in
Chance of precipitation32%
Record high63° (1998)
Record low6° (1964)
Mon, 0737° / 27°0.13
37 °
Merrillville, Monday, 7 December
Climate normal for this date — 60-year average.
Average high37°
Average low27°
Average precipitation0.13 in
Chance of precipitation30%
Record high58° (1980)
Record low4° (1977)
Tue, 0838° / 27°0.08
38 °
Merrillville, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.08 in
Chance of precipitation27%
Record high62° (1991)
Record low4° (1977)
Wed, 0938° / 26°0.09
38 °
Merrillville, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.09 in
Chance of precipitation40%
Record high55° (2023)
Record low-1° (1977)
Thu, 1037° / 26°0.08
37 °
Merrillville, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high37°
Average low26°
Average precipitation0.08 in
Chance of precipitation38%
Record high61° (1971)
Record low0° (1978)
Fri, 1136° / 26°0.12
36 °
Merrillville, Friday, 11 December
Climate normal for this date — 60-year average.
Average high36°
Average low26°
Average precipitation0.12 in
Chance of precipitation32%
Record high58° (2021)
Record low-3° (1972)
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 Merrillville, IN 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 Merrillville, IN 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.