Monthly outlook for Merrillville, IN: average high 51.1°, average low 39.4°. That is 2.6° above the climate normal for November. Precipitation is expected on 8 days (about 5.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 20 November (64.3°), the coolest 26 November (29.6°).
51.1°/39.4°
Average high / low
+2.6°
Above normal
8 / 5
Wet days / normal
5.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 November – 21 November
51.2°
47.5°
+2°
22 November – 1 December
50.9°
43.3°
+4.2°
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, 1342° / 37°0.81
42 °
Merrillville, Friday, 13 November
Rain. High 42°, low 37°.
Pressure30.03 inHg
Wind7.7 mph N
Humidity90%
Visibility3.0 mi
Dew point36°
Sat, 1443° / 35°0.06
43 °
Merrillville, Saturday, 14 November
Light rain. High 43°, low 35°.
Pressure30.27 inHg
Wind5.4 mph NW
Humidity65%
Visibility6.2 mi
Dew point32°
Sun, 1545° / 31°0
45 °
Merrillville, Sunday, 15 November
Mostly clear. High 45°, low 31°.
Pressure30.45 inHg
Wind3.2 mph NW
Humidity61%
Visibility6.2 mi
Dew point32°
Mon, 1649° / 30°0
49 °
Merrillville, Monday, 16 November
Clear. High 49°, low 30°.
Pressure30.50 inHg
Wind4.2 mph S
Humidity56%
Visibility—
Dew point30°
Tue, 1752° / 32°0
52 °
Merrillville, Tuesday, 17 November
Clear. High 52°, low 32°.
Pressure30.47 inHg
Wind5.5 mph S
Humidity55%
Visibility—
Dew point33°
Wed, 1856° / 38°0
56 °
Merrillville, Wednesday, 18 November
Partly cloudy. High 56°, low 38°.
Pressure30.36 inHg
Wind11.3 mph S
Humidity39%
Visibility—
Dew point28°
Thu, 1960° / 46°0
60 °
Merrillville, Thursday, 19 November
Overcast. High 60°, low 46°.
Pressure30.12 inHg
Wind14.7 mph SW
Humidity48%
Visibility—
Dew point35°
Fri, 2064° / 48°0.02
64 °
Merrillville, Friday, 20 November
Light rain. High 64°, low 48°.
Pressure30.18 inHg
Wind9.1 mph SW
Humidity64%
Visibility—
Dew point49°
Sat, 2156° / 49°0.28
56 °
Merrillville, Saturday, 21 November
Rain. High 56°, low 49°.
Pressure30.21 inHg
Wind9.7 mph S
Humidity76%
Visibility—
Dew point44°
Sun, 2262° / 56°0.17
62 °
Merrillville, Sunday, 22 November
Rain. High 62°, low 56°.
Pressure29.80 inHg
Wind16.8 mph SW
Humidity51%
Visibility—
Dew point43°
Mon, 2354° / 50°1.05
54 °
Merrillville, Monday, 23 November
Rain. High 54°, low 50°.
Pressure29.74 inHg
Wind14.4 mph S
Humidity90%
Visibility—
Dew point47°
Tue, 2458° / 39°1.22
58 °
Merrillville, Tuesday, 24 November
Rain. High 58°, low 39°.
Pressure29.44 inHg
Wind22 mph SW
Humidity82%
Visibility—
Dew point48°
Wed, 2539° / 33°0
39 °
Merrillville, Wednesday, 25 November
Overcast. High 39°, low 33°.
Pressure30.18 inHg
Wind19.2 mph W
Humidity51%
Visibility—
Dew point21°
Thu, 2636° / 30°0.01
36 °
Merrillville, Thursday, 26 November
Light snow. High 36°, low 30°.
Pressure30.39 inHg
Wind9.1 mph W
Humidity38%
Visibility—
Dew point12°
Fri, 2755° / 36°1.19
55 °
Merrillville, Friday, 27 November
Snow. High 55°, low 36°.
Pressure29.88 inHg
Wind17 mph SE
Humidity72%
Visibility—
Dew point35°
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.