As of 12:53 CDT

Weather in Mercer, IA

72°

Mercer, Saturday, 24 October, 12:53

Clear. Feels like 71°. High 74°, low 57°.

Pressure30.21 inHg

Wind10.7 mph S

Humidity47%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Monthly outlook for Mercer, IA: average high 65.2°, average low 52.2°. That is 5.4° above the climate normal for October. Precipitation is expected on 7 days (about 2.3 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 25 October (74.4°), the coolest 4 November (39.8°).

65.2°/52.2°

Average high / low

+5.4°

Above normal

7 / 4

Wet days / normal

2.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
24 October – 2 November	67.5°	57°	+5.8°
3 November – 12 November	61.4°	51.6°	+5.4°
13 November – 22 November	at normal	48.2°	—

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).

Sun, 2574° / 53°

74 °

Mercer, Sunday, 25 October

Overcast. High 74°, low 53°.

Pressure30.33 inHg

Wind4 mph S

Humidity59%

Visibility6.2 mi

Dew point55°

Mon, 2673° / 57°

0.04

73 °

Mercer, Monday, 26 October

Light rain. High 73°, low 57°.

Pressure30.24 inHg

Wind7.1 mph S

Humidity56%

Visibility6.2 mi

Dew point53°

Tue, 2767° / 58°

0.03

67 °

Mercer, Tuesday, 27 October

Light rain. High 67°, low 58°.

Pressure30.09 inHg

Wind10.7 mph S

Humidity68%

Visibility6.2 mi

Dew point53°

Wed, 2873° / 57°

0.06

73 °

Mercer, Wednesday, 28 October

Light rain. High 73°, low 57°.

Pressure30.06 inHg

Wind10.1 mph S

Humidity64%

Visibility6.2 mi

Dew point55°

Thu, 2966° / 58°

0.63

66 °

Mercer, Thursday, 29 October

Rain. High 66°, low 58°.

Pressure30.12 inHg

Wind8.1 mph S

Humidity81%

Visibility—

Dew point58°

Fri, 3068° / 59°

0.46

68 °

Mercer, Friday, 30 October

Rain. High 68°, low 59°.

Pressure30.12 inHg

Wind12.7 mph SE

Humidity80%

Visibility—

Dew point61°

Sat, 3160° / 55°

0.44

60 °

Mercer, Saturday, 31 October

Rain. High 60°, low 55°.

Pressure30.03 inHg

Wind18.4 mph S

Humidity88%

Visibility—

Dew point54°

Sun, 0164° / 49°

0.13

64 °

Mercer, Sunday, 1 November

Light rain. High 64°, low 49°.

Pressure29.68 inHg

Wind16.4 mph NW

Humidity89%

Visibility—

Dew point60°

Mon, 0255° / 44°

0.37

55 °

Mercer, Monday, 2 November

Rain. High 55°, low 44°.

Pressure30.15 inHg

Wind29.1 mph N

Humidity50%

Visibility—

Dew point36°

Tue, 0357° / 40°

57 °

Mercer, Tuesday, 3 November

Clear. High 57°, low 40°.

Pressure30.18 inHg

Wind8 mph NW

Humidity43%

Visibility—

Dew point32°

Wed, 0453° / 40°

53 °

Mercer, Wednesday, 4 November

Overcast. High 53°, low 40°.

Pressure30.12 inHg

Wind13.4 mph SE

Humidity62%

Visibility—

Dew point37°

Thu, 0563° / 48°

63 °

Mercer, Thursday, 5 November

Overcast. High 63°, low 48°.

Pressure29.94 inHg

Wind20.1 mph S

Humidity64%

Visibility—

Dew point47°

Fri, 0666° / 58°

0.02

66 °

Mercer, Friday, 6 November

Light rain. High 66°, low 58°.

Pressure29.91 inHg

Wind19.3 mph S

Humidity65%

Visibility—

Dew point52°

Sat, 0769° / 55°

0.09

69 °

Mercer, Saturday, 7 November

Light rain. High 69°, low 55°.

Pressure29.83 inHg

Wind17.8 mph S

Humidity76%

Visibility—

Dew point59°

Sun, 0861° / 48°

61 °

Mercer, Sunday, 8 November

Clear. High 61°, low 48°.

Pressure30.24 inHg

Wind12.4 mph NW

Humidity35%

Visibility—

Dew point30°

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

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)

Wed, 1849° / 34°

0.06

49 °

Mercer, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.06 in

Chance of precipitation22%

Record high71° (1999)

Record low7° (1961)

Thu, 1949° / 33°

0.07

49 °

Mercer, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high49°

Average low33°

Average precipitation0.07 in

Chance of precipitation25%

Record high67° (2007)

Record low14° (1961)

Fri, 2046° / 31°

0.07

46 °

Mercer, Friday, 20 November

Climate normal for this date — 60-year average.

Average high46°

Average low31°

Average precipitation0.07 in

Chance of precipitation23%

Record high65° (1990)

Record low11° (1985)

Sat, 2146° / 30°

0.04

46 °

Mercer, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high46°

Average low30°

Average precipitation0.04 in

Chance of precipitation17%

Record high71° (1990)

Record low8° (1964)

Sun, 2246° / 31°

0.04

46 °

Mercer, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high46°

Average low31°

Average precipitation0.04 in

Chance of precipitation20%

Record high70° (1966)

Record low16° (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 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.