As of 12:28 CDT

Weather in Mercer, IA

61°Current weather

Mercer, Sunday, 18 October, 12:28

Clear. Feels like 59°. High 63°, low 40°.

Pressure30.27 inHg
Wind13.5 mph S
Humidity49%
Visibility6.2 mi
Dew point42°

Monthly outlook for Mercer, IA: average high 63.1°, average low 46.4°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 24 October (72.4°), the coolest 1 November (31.3°).

63.1°/46.4°
Average high / low
+2.5°
Above normal
4 / 4
Wet days / normal
0.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October65.7°60.1°+3.1°
28 October – 6 November58.9°54.9°+2.2°
7 November – 16 Novemberat normal49.9°—

October records over 66 years

92.1°5 October 1963All-time high
10.4°27 October 1997All-time low

Climate normals and records are computed from the nearest reference point — Prescott (6 mi).

Mon, 1964° / 42°0Mostly clear
64 °Mostly clear

Mercer, Monday, 19 October

Mostly clear. High 64°, low 42°.

Pressure30.30 inHg
Wind7.8 mph S
Humidity63%
Visibility6.2 mi
Dew point47°
Tue, 2066° / 46°0Clear
66 °Clear

Mercer, Tuesday, 20 October

Clear. High 66°, low 46°.

Pressure30.30 inHg
Wind8.6 mph S
Humidity58%
Visibility6.2 mi
Dew point48°
Wed, 2170° / 51°0Clear
70 °Clear

Mercer, Wednesday, 21 October

Clear. High 70°, low 51°.

Pressure30.24 inHg
Wind6.7 mph S
Humidity60%
Visibility6.2 mi
Dew point52°
Thu, 2269° / 51°0Clear
69 °Clear

Mercer, Thursday, 22 October

Clear. High 69°, low 51°.

Pressure30.27 inHg
Wind7.6 mph SE
Humidity58%
Visibility6.2 mi
Dew point50°
Fri, 2370° / 53°0Overcast
70 °Overcast

Mercer, Friday, 23 October

Overcast. High 70°, low 53°.

Pressure30.15 inHg
Wind15.1 mph SE
Humidity56%
Visibility—
Dew point50°
Sat, 2472° / 54°0.16Light rain
72 °Light rain

Mercer, Saturday, 24 October

Light rain. High 72°, low 54°.

Pressure30.12 inHg
Wind16.9 mph S
Humidity53%
Visibility—
Dew point53°
Sun, 2557° / 48°0Overcast
57 °Overcast

Mercer, Sunday, 25 October

Overcast. High 57°, low 48°.

Pressure30.47 inHg
Wind10.3 mph NE
Humidity47%
Visibility—
Dew point34°
Mon, 2665° / 47°0.23Light rain
65 °Light rain

Mercer, Monday, 26 October

Light rain. High 65°, low 47°.

Pressure30.18 inHg
Wind8.4 mph SE
Humidity70%
Visibility—
Dew point50°
Tue, 2760° / 53°0.05Light rain
60 °Light rain

Mercer, Tuesday, 27 October

Light rain. High 60°, low 53°.

Pressure30.15 inHg
Wind13.1 mph S
Humidity64%
Visibility—
Dew point47°
Wed, 2861° / 51°0.12Light rain
61 °Light rain

Mercer, Wednesday, 28 October

Light rain. High 61°, low 51°.

Pressure29.83 inHg
Wind15.1 mph S
Humidity90%
Visibility—
Dew point55°
Thu, 2965° / 52°0Clear
65 °Clear

Mercer, Thursday, 29 October

Clear. High 65°, low 52°.

Pressure29.80 inHg
Wind8.1 mph W
Humidity47%
Visibility—
Dew point42°
Fri, 3072° / 47°0Overcast
72 °Overcast

Mercer, Friday, 30 October

Overcast. High 72°, low 47°.

Pressure29.44 inHg
Wind20.8 mph W
Humidity62%
Visibility—
Dew point54°
Sat, 3146° / 37°0Mostly clear
46 °Mostly clear

Mercer, Saturday, 31 October

Mostly clear. High 46°, low 37°.

Pressure29.74 inHg
Wind26.4 mph W
Humidity50%
Visibility—
Dew point27°
Sun, 0150° / 31°0Clear
50 °Clear

Mercer, Sunday, 1 November

Clear. High 50°, low 31°.

Pressure30.30 inHg
Wind13.7 mph W
Humidity46%
Visibility—
Dew point25°
Mon, 0259° / 39°0Overcast
59 °Overcast

Mercer, Monday, 2 November

Overcast. High 59°, low 39°.

Pressure30.18 inHg
Wind20.8 mph S
Humidity40%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0354° / 39°0.09Climate normal
54 °Climate normal

Mercer, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.09 in
Chance of precipitation20%
Record high74° (1978)
Record low9° (1991)
Wed, 0453° / 38°0.08Climate normal
53 °Climate normal

Mercer, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation17%
Record high71° (1978)
Record low10° (1991)
Thu, 0553° / 38°0.05Climate normal
53 °Climate normal

Mercer, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.05 in
Chance of precipitation22%
Record high73° (2015)
Record low20° (1967)
Fri, 0653° / 37°0.06Climate normal
53 °Climate normal

Mercer, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation20%
Record high72° (1980)
Record low15° (1991)
Sat, 0753° / 36°0.02Climate normal
53 °Climate normal

Mercer, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°
Average low36°
Average precipitation0.02 in
Chance of precipitation8%
Record high72° (1966)
Record low-1° (1991)
Sun, 0853° / 37°0.04Climate normal
53 °Climate normal

Mercer, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.04 in
Chance of precipitation20%
Record high75° (1999)
Record low-4° (1991)
Mon, 0953° / 37°0.11Climate normal
53 °Climate normal

Mercer, Monday, 9 November

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.11 in
Chance of precipitation32%
Record high72° (1999)
Record low19° (1991)
Tue, 1050° / 34°0.09Climate normal
50 °Climate normal

Mercer, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high50°
Average low34°
Average precipitation0.09 in
Chance of precipitation25%
Record high74° (2012)
Record low10° (2018)
Wed, 1148° / 32°0.07Climate normal
48 °Climate normal

Mercer, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high48°
Average low32°
Average precipitation0.07 in
Chance of precipitation20%
Record high73° (1964)
Record low8° (1986)
Thu, 1247° / 32°0.06Climate normal
47 °Climate normal

Mercer, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (2005)
Record low2° (1968)
Fri, 1349° / 32°0.07Climate normal
49 °Climate normal

Mercer, Friday, 13 November

Climate normal for this date — 60-year average.

Average high49°
Average low32°
Average precipitation0.07 in
Chance of precipitation20%
Record high76° (1999)
Record low4° (1986)
Sat, 1449° / 34°0.03Climate normal
49 °Climate normal

Mercer, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high49°
Average low34°
Average precipitation0.03 in
Chance of precipitation18%
Record high72° (2025)
Record low12° (2014)
Sun, 1549° / 34°0.04Climate normal
49 °Climate normal

Mercer, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°
Average low34°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (2001)
Record low1° (1972)
Mon, 1650° / 33°0.04Climate normal
50 °Climate normal

Mercer, Monday, 16 November

Climate normal for this date — 60-year average.

Average high50°
Average low33°
Average precipitation0.04 in
Chance of precipitation12%
Record high69° (2001)
Record low12° (2014)

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 Mercer, IA 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 Mercer, IA 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.