As of 18:32 CDT

Weather in Mercer, IA

63°

Mercer, Monday, 19 October, 18:32

Mostly clear. Feels like 62°. High 66°, low 42°.

Pressure30.27 inHg

Wind5 mph SE

Humidity59%

Visibility6.2 mi

Dew point48°

See detailed hourly forecast

Monthly outlook for Mercer, IA: average high 61.3°, average low 43.5°. That is 1.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 24 October (71.5°), the coolest 28 October (26.4°).

61.3°/43.5°

Average high / low

+1.7°

Above normal

1 / 4

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
19 October – 28 October	63.1°	59.8°	+1.9°
29 October – 7 November	58.2°	54.5°	+2°
8 November – 17 November	at normal	49.6°	—

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).

Tue, 2070° / 44°

70 °

Mercer, Tuesday, 20 October

Clear. High 70°, low 44°.

Pressure30.30 inHg

Wind8.3 mph SE

Humidity56%

Visibility6.2 mi

Dew point47°

Wed, 2170° / 47°

70 °

Mercer, Wednesday, 21 October

Clear. High 70°, low 47°.

Pressure30.24 inHg

Wind6.4 mph SW

Humidity61%

Visibility6.2 mi

Dew point52°

Thu, 2271° / 51°

71 °

Mercer, Thursday, 22 October

Clear. High 71°, low 51°.

Pressure30.27 inHg

Wind7 mph SE

Humidity53%

Visibility6.2 mi

Dew point51°

Fri, 2370° / 54°

70 °

Mercer, Friday, 23 October

Overcast. High 70°, low 54°.

Pressure30.18 inHg

Wind12.9 mph SE

Humidity58%

Visibility6.2 mi

Dew point51°

Sat, 2471° / 57°

71 °

Mercer, Saturday, 24 October

Partly cloudy. High 71°, low 57°.

Pressure30.21 inHg

Wind14 mph SE

Humidity52%

Visibility—

Dew point49°

Sun, 2561° / 53°

0.01

61 °

Mercer, Sunday, 25 October

Light rain. High 61°, low 53°.

Pressure30.33 inHg

Wind10.3 mph S

Humidity56%

Visibility—

Dew point44°

Mon, 2660° / 48°

60 °

Mercer, Monday, 26 October

Overcast. High 60°, low 48°.

Pressure30.33 inHg

Wind10.6 mph NE

Humidity42%

Visibility—

Dew point34°

Tue, 2749° / 37°

0.12

49 °

Mercer, Tuesday, 27 October

Light rain. High 49°, low 37°.

Pressure30.45 inHg

Wind16.6 mph N

Humidity46%

Visibility—

Dew point28°

Wed, 2843° / 26°

43 °

Mercer, Wednesday, 28 October

Clear. High 43°, low 26°.

Pressure30.62 inHg

Wind9.9 mph N

Humidity30%

Visibility—

Dew point10°

Thu, 2949° / 27°

49 °

Mercer, Thursday, 29 October

Clear. High 49°, low 27°.

Pressure30.45 inHg

Wind10.4 mph S

Humidity29%

Visibility—

Dew point13°

Fri, 3058° / 36°

58 °

Mercer, Friday, 30 October

Mostly clear. High 58°, low 36°.

Pressure30.09 inHg

Wind19.8 mph SW

Humidity46%

Visibility—

Dew point33°

Sat, 3164° / 42°

64 °

Mercer, Saturday, 31 October

Mostly clear. High 64°, low 42°.

Pressure29.97 inHg

Wind14.5 mph SW

Humidity57%

Visibility—

Dew point43°

Sun, 0164° / 50°

64 °

Mercer, Sunday, 1 November

Overcast. High 64°, low 50°.

Pressure30.06 inHg

Wind11.9 mph NE

Humidity64%

Visibility—

Dew point48°

Mon, 0256° / 41°

56 °

Mercer, Monday, 2 November

Mostly clear. High 56°, low 41°.

Pressure30.21 inHg

Wind8.8 mph NE

Humidity52%

Visibility—

Dew point36°

Tue, 0358° / 40°

58 °

Mercer, Tuesday, 3 November

Mostly clear. High 58°, low 40°.

Pressure30.00 inHg

Wind16.8 mph SE

Humidity56%

Visibility—

Dew point38°

From day 17 onward the outlook is built from 60-year climate statistics

Wed, 0453° / 38°

0.08

53 °

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°

0.05

53 °

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°

0.06

53 °

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°

0.02

53 °

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°

0.04

53 °

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°

0.11

53 °

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°

0.09

50 °

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°

0.07

48 °

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°

0.06

47 °

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°

0.07

49 °

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°

0.03

49 °

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°

0.04

49 °

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°

0.04

50 °

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)

Tue, 1750° / 34°

0.1

50 °

Mercer, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.1 in

Chance of precipitation23%

Record high71° (2016)

Record low10° (2005)

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.