As of 09:20 CDT

Weather in Merrillville, IN

56°Current weather

Merrillville, Sunday, 25 October, 09:20

Clear. Feels like 55°. High 70°, low 49°.

Pressure30.45 inHg
Wind5.7 mph S
Humidity76%
Visibility6.2 mi
Dew point49°

Monthly outlook for Merrillville, IN: average high 63.4°, average low 52.1°. That is 4.7° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 3 November (73.7°), the coolest 7 November (44.5°).

63.4°/52.1°
Average high / low
+4.7°
Above normal
4 / 5
Wet days / normal
0.8 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
25 October – 3 November67.6°56.2°+6.4°
4 November – 13 November56.3°51.1°+2.9°
14 November – 23 Novemberat normal47.2°—

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).

Mon, 2667° / 50°0Overcast
67 °Overcast

Merrillville, Monday, 26 October

Overcast. High 67°, low 50°.

Pressure30.36 inHg
Wind5.6 mph N
Humidity80%
Visibility6.2 mi
Dew point56°
Tue, 2768° / 49°0Overcast
68 °Overcast

Merrillville, Tuesday, 27 October

Overcast. High 68°, low 49°.

Pressure30.30 inHg
Wind5.6 mph SE
Humidity73%
Visibility6.2 mi
Dew point54°
Wed, 2868° / 53°0Overcast
68 °Overcast

Merrillville, Wednesday, 28 October

Overcast. High 68°, low 53°.

Pressure30.24 inHg
Wind6.3 mph S
Humidity66%
Visibility6.2 mi
Dew point54°
Thu, 2970° / 56°0.06Light rain
70 °Light rain

Merrillville, Thursday, 29 October

Light rain. High 70°, low 56°.

Pressure30.09 inHg
Wind9.3 mph SW
Humidity59%
Visibility—
Dew point54°
Fri, 3063° / 54°0.01Light rain
63 °Light rain

Merrillville, Friday, 30 October

Light rain. High 63°, low 54°.

Pressure30.27 inHg
Wind6.3 mph N
Humidity75%
Visibility—
Dew point54°
Sat, 3168° / 54°0.02Light rain
68 °Light rain

Merrillville, Saturday, 31 October

Light rain. High 68°, low 54°.

Pressure30.12 inHg
Wind6.7 mph S
Humidity46%
Visibility—
Dew point45°
Sun, 0161° / 59°0.48Rain
61 °Rain

Merrillville, Sunday, 1 November

Rain. High 61°, low 59°.

Pressure30.03 inHg
Wind7.7 mph SE
Humidity93%
Visibility—
Dew point57°
Mon, 0268° / 60°0Overcast
68 °Overcast

Merrillville, Monday, 2 November

Overcast. High 68°, low 60°.

Pressure30.03 inHg
Wind12.3 mph S
Humidity62%
Visibility—
Dew point53°
Tue, 0374° / 60°0.02Light rain
74 °Light rain

Merrillville, Tuesday, 3 November

Light rain. High 74°, low 60°.

Pressure29.77 inHg
Wind15.1 mph S
Humidity52%
Visibility—
Dew point54°
Wed, 0459° / 52°0Partly cloudy
59 °Partly cloudy

Merrillville, Wednesday, 4 November

Partly cloudy. High 59°, low 52°.

Pressure29.77 inHg
Wind15 mph W
Humidity33%
Visibility—
Dew point29°
Thu, 0555° / 50°0Overcast
55 °Overcast

Merrillville, Thursday, 5 November

Overcast. High 55°, low 50°.

Pressure29.77 inHg
Wind10.3 mph W
Humidity55%
Visibility—
Dew point37°
Fri, 0656° / 48°0Overcast
56 °Overcast

Merrillville, Friday, 6 November

Overcast. High 56°, low 48°.

Pressure29.74 inHg
Wind10.9 mph NW
Humidity51%
Visibility—
Dew point36°
Sat, 0760° / 44°0Partly cloudy
60 °Partly cloudy

Merrillville, Saturday, 7 November

Partly cloudy. High 60°, low 44°.

Pressure29.77 inHg
Wind11.9 mph SE
Humidity40%
Visibility—
Dew point32°
Sun, 0857° / 52°0.16Light rain
57 °Light rain

Merrillville, Sunday, 8 November

Light rain. High 57°, low 52°.

Pressure29.44 inHg
Wind14.9 mph SE
Humidity74%
Visibility—
Dew point48°
Mon, 0951° / 45°0.07Light rain
51 °Light rain

Merrillville, Monday, 9 November

Light rain. High 51°, low 45°.

Pressure29.85 inHg
Wind18.5 mph NW
Humidity68%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 2346° / 33°0.1Climate normal
46 °Climate normal

Merrillville, Monday, 23 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.1 in
Chance of precipitation32%
Record high66° (1999)
Record low14° (1970)

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.