As of 14:56 CDT

Weather in Mercer, IA

77°

Mercer, Friday, 23 October, 14:56

Partly cloudy. Feels like 77°. High 77°, low 55°.

Pressure30.09 inHg

Wind13 mph S

Humidity41%

Visibility6.2 mi

Dew point52°

See detailed hourly forecast

Monthly outlook for Mercer, IA: average high 66.1°, average low 52.8°. That is 5.6° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 23 October (77.2°), the coolest 30 October (43.2°).

66.1°/52.8°

Average high / low

+5.6°

Above normal

4 / 4

Wet days / normal

0.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
23 October – 1 November	65.8°	57.7°	+4.5°
2 November – 11 November	66.6°	52.3°	+8°
12 November – 21 November	at normal	48.3°	—

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).

Sat, 2476° / 58°

76 °

Mercer, Saturday, 24 October

Mostly clear. High 76°, low 58°.

Pressure30.21 inHg

Wind11.2 mph S

Humidity52%

Visibility6.2 mi

Dew point51°

Sun, 2574° / 57°

74 °

Mercer, Sunday, 25 October

Overcast. High 74°, low 57°.

Pressure30.33 inHg

Wind5.5 mph SW

Humidity59%

Visibility6.2 mi

Dew point56°

Mon, 2673° / 54°

73 °

Mercer, Monday, 26 October

Partly cloudy. High 73°, low 54°.

Pressure30.30 inHg

Wind7.4 mph E

Humidity66%

Visibility6.2 mi

Dew point55°

Tue, 2768° / 59°

0.01

68 °

Mercer, Tuesday, 27 October

Light rain. High 68°, low 59°.

Pressure30.15 inHg

Wind9.2 mph S

Humidity61%

Visibility6.2 mi

Dew point51°

Wed, 2869° / 54°

0.05

69 °

Mercer, Wednesday, 28 October

Light rain. High 69°, low 54°.

Pressure29.97 inHg

Wind14.5 mph W

Humidity59%

Visibility—

Dew point53°

Thu, 2954° / 44°

0.09

54 °

Mercer, Thursday, 29 October

Light rain. High 54°, low 44°.

Pressure30.24 inHg

Wind17.7 mph N

Humidity63%

Visibility—

Dew point37°

Fri, 3049° / 43°

49 °

Mercer, Friday, 30 October

Overcast. High 49°, low 43°.

Pressure30.24 inHg

Wind12.1 mph E

Humidity47%

Visibility—

Dew point29°

Sat, 3153° / 44°

0.02

53 °

Mercer, Saturday, 31 October

Light rain. High 53°, low 44°.

Pressure30.09 inHg

Wind8.5 mph E

Humidity92%

Visibility—

Dew point47°

Sun, 0166° / 51°

66 °

Mercer, Sunday, 1 November

Overcast. High 66°, low 51°.

Pressure30.06 inHg

Wind8.6 mph S

Humidity72%

Visibility—

Dew point52°

Mon, 0259° / 55°

0.56

59 °

Mercer, Monday, 2 November

Rain. High 59°, low 55°.

Pressure29.77 inHg

Wind18.7 mph SE

Humidity97%

Visibility—

Dew point56°

Tue, 0370° / 59°

0.02

70 °

Mercer, Tuesday, 3 November

Light rain. High 70°, low 59°.

Pressure29.62 inHg

Wind6.7 mph E

Humidity71%

Visibility—

Dew point58°

Wed, 0469° / 56°

69 °

Mercer, Wednesday, 4 November

Light rain. High 69°, low 56°.

Pressure29.77 inHg

Wind5.6 mph SE

Humidity55%

Visibility—

Dew point49°

Thu, 0564° / 54°

0.13

64 °

Mercer, Thursday, 5 November

Light rain. High 64°, low 54°.

Pressure29.77 inHg

Wind9.3 mph NW

Humidity77%

Visibility—

Dew point55°

Fri, 0666° / 50°

66 °

Mercer, Friday, 6 November

Overcast. High 66°, low 50°.

Pressure29.85 inHg

Wind15.9 mph SW

Humidity48%

Visibility—

Dew point44°

Sat, 0771° / 52°

71 °

Mercer, Saturday, 7 November

Mostly clear. High 71°, low 52°.

Pressure29.91 inHg

Wind9.9 mph W

Humidity40%

Visibility—

Dew point42°

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

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)

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)

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.