As of 08:00 CDT

Weather in Merrillville, IN

49°Current weather

Merrillville, Saturday, 24 October, 08:00

Clear. Feels like 48°. High 69°, low 48°.

Pressure30.39 inHg
Wind3.4 mph SE
Humidity87%
Visibility6.2 mi
Dew point46°

Monthly outlook for Merrillville, IN: average high 60.1°, average low 48.7°. That is 2.7° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 29 October (72°), the coolest 7 November (31.6°).

60.1°/48.7°
Average high / low
+2.7°
Above normal
5 / 5
Wet days / normal
1.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
24 October – 2 November67.4°56.7°+5.9°
3 November – 12 November48.1°51.7°-2°
13 November – 22 Novemberat normal47.3°—

October records over 66 years

87.1°6 October 2007All-time high
25.7°24 October 1981All-time low

Climate normals and records are computed from the nearest reference point — Salt Creek Commons (10 mi).

Sun, 2571° / 46°0Overcast
71 °Overcast

Merrillville, Sunday, 25 October

Overcast. High 71°, low 46°.

Pressure30.42 inHg
Wind4.1 mph S
Humidity64%
Visibility6.2 mi
Dew point52°
Mon, 2664° / 48°0Overcast
64 °Overcast

Merrillville, Monday, 26 October

Overcast. High 64°, low 48°.

Pressure30.33 inHg
Wind3.8 mph N
Humidity80%
Visibility6.2 mi
Dew point57°
Tue, 2767° / 50°0Overcast
67 °Overcast

Merrillville, Tuesday, 27 October

Overcast. High 67°, low 50°.

Pressure30.27 inHg
Wind5.2 mph SE
Humidity71%
Visibility6.2 mi
Dew point54°
Wed, 2871° / 53°0Clear
71 °Clear

Merrillville, Wednesday, 28 October

Clear. High 71°, low 53°.

Pressure30.18 inHg
Wind7.7 mph S
Humidity53%
Visibility—
Dew point50°
Thu, 2972° / 56°0.1Light rain
72 °Light rain

Merrillville, Thursday, 29 October

Light rain. High 72°, low 56°.

Pressure30.15 inHg
Wind8.7 mph SW
Humidity57%
Visibility—
Dew point52°
Fri, 3066° / 60°0.03Light rain
66 °Light rain

Merrillville, Friday, 30 October

Light rain. High 66°, low 60°.

Pressure30.18 inHg
Wind6.8 mph N
Humidity75%
Visibility—
Dew point58°
Sat, 3171° / 60°0.1Light rain
71 °Light rain

Merrillville, Saturday, 31 October

Light rain. High 71°, low 60°.

Pressure30.12 inHg
Wind13.4 mph SW
Humidity53%
Visibility—
Dew point47°
Sun, 0162° / 57°0.27Rain
62 °Rain

Merrillville, Sunday, 1 November

Rain. High 62°, low 57°.

Pressure30.03 inHg
Wind7.8 mph W
Humidity82%
Visibility—
Dew point55°
Mon, 0261° / 56°0Overcast
61 °Overcast

Merrillville, Monday, 2 November

Overcast. High 61°, low 56°.

Pressure30.12 inHg
Wind10 mph E
Humidity66%
Visibility—
Dew point49°
Tue, 0356° / 53°0.61Rain
56 °Rain

Merrillville, Tuesday, 3 November

Rain. High 56°, low 53°.

Pressure29.85 inHg
Wind11.9 mph E
Humidity91%
Visibility—
Dew point51°
Wed, 0454° / 50°0.08Light rain
54 °Light rain

Merrillville, Wednesday, 4 November

Light rain. High 54°, low 50°.

Pressure29.91 inHg
Wind13.5 mph N
Humidity64%
Visibility—
Dew point42°
Thu, 0549° / 39°0Light rain
49 °Light rain

Merrillville, Thursday, 5 November

Light rain. High 49°, low 39°.

Pressure29.94 inHg
Wind16.5 mph N
Humidity50%
Visibility—
Dew point30°
Fri, 0640° / 32°0Overcast
40 °Overcast

Merrillville, Friday, 6 November

Overcast. High 40°, low 32°.

Pressure30.30 inHg
Wind13.8 mph NW
Humidity36%
Visibility—
Dew point13°
Sat, 0742° / 32°0Clear
42 °Clear

Merrillville, Saturday, 7 November

Clear. High 42°, low 32°.

Pressure30.47 inHg
Wind13.6 mph S
Humidity30%
Visibility—
Dew point11°
Sun, 0847° / 39°0.02Light rain
47 °Light rain

Merrillville, Sunday, 8 November

Light rain. High 47°, low 39°.

Pressure30.06 inHg
Wind16.8 mph SW
Humidity59%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0952° / 40°0.15Climate normal
52 °Climate normal

Merrillville, Monday, 9 November

Climate normal for this date — 60-year average.

Average high52°
Average low40°
Average precipitation0.15 in
Chance of precipitation35%
Record high72° (1999)
Record low19° (1991)
Tue, 1051° / 39°0.16Climate normal
51 °Climate normal

Merrillville, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high51°
Average low39°
Average precipitation0.16 in
Chance of precipitation42%
Record high74° (2020)
Record low18° (2018)
Wed, 1149° / 37°0.09Climate normal
49 °Climate normal

Merrillville, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation30%
Record high71° (1964)
Record low20° (2025)
Thu, 1247° / 35°0.07Climate normal
47 °Climate normal

Merrillville, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.07 in
Chance of precipitation30%
Record high69° (1964)
Record low3° (2019)
Fri, 1347° / 35°0.06Climate normal
47 °Climate normal

Merrillville, Friday, 13 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.06 in
Chance of precipitation20%
Record high69° (1999)
Record low3° (2019)
Sat, 1449° / 35°0.07Climate normal
49 °Climate normal

Merrillville, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation38%
Record high69° (1971)
Record low11° (1986)
Sun, 1548° / 36°0.1Climate normal
48 °Climate normal

Merrillville, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high48°
Average low36°
Average precipitation0.1 in
Chance of precipitation37%
Record high67° (1990)
Record low21° (2019)
Mon, 1647° / 35°0.06Climate normal
47 °Climate normal

Merrillville, Monday, 16 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high64° (1971)
Record low22° (1997)
Tue, 1748° / 36°0.1Climate normal
48 °Climate normal

Merrillville, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high48°
Average low36°
Average precipitation0.1 in
Chance of precipitation30%
Record high69° (2016)
Record low16° (1989)
Wed, 1848° / 36°0.12Climate normal
48 °Climate normal

Merrillville, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high48°
Average low36°
Average precipitation0.12 in
Chance of precipitation28%
Record high68° (2016)
Record low12° (2014)
Thu, 1948° / 36°0.09Climate normal
48 °Climate normal

Merrillville, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high48°
Average low36°
Average precipitation0.09 in
Chance of precipitation33%
Record high67° (1991)
Record low17° (2014)
Fri, 2047° / 35°0.11Climate normal
47 °Climate normal

Merrillville, Friday, 20 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.11 in
Chance of precipitation28%
Record high63° (2007)
Record low13° (2022)
Sat, 2145° / 34°0.12Climate normal
45 °Climate normal

Merrillville, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high45°
Average low34°
Average precipitation0.12 in
Chance of precipitation33%
Record high67° (1990)
Record low12° (1964)
Sun, 2245° / 33°0.06Climate normal
45 °Climate normal

Merrillville, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2010)
Record low13° (1964)

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.