As of 01:34 CDT

Weather in Mercer, IA

38°Current weather

Mercer, Saturday, 17 October, 01:34

Clear. Feels like 35°. High 55°, low 36°.

Pressure30.59 inHg
Wind3.4 mph N
Humidity85%
Visibility6.2 mi
Dew point33°

Monthly outlook for Mercer, IA: average high 62.5°, average low 47.2°. That is 1.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 23 October (73.8°), the coolest 17 October (35.6°).

62.5°/47.2°
Average high / low
+1.9°
Above normal
5 / 4
Wet days / normal
1.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
17 October – 26 October64.3°60.6°+2.1°
27 October – 5 November59.6°55.3°+2.3°
6 November – 15 Novemberat normal50.3°—

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).

Sun, 1862° / 42°0Clear
62 °Clear

Mercer, Sunday, 18 October

Clear. High 62°, low 42°.

Pressure30.30 inHg
Wind13.8 mph S
Humidity59%
Visibility6.2 mi
Dew point43°
Mon, 1963° / 47°0Overcast
63 °Overcast

Mercer, Monday, 19 October

Overcast. High 63°, low 47°.

Pressure30.30 inHg
Wind11 mph S
Humidity62%
Visibility6.2 mi
Dew point47°
Tue, 2068° / 48°0Clear
68 °Clear

Mercer, Tuesday, 20 October

Clear. High 68°, low 48°.

Pressure30.27 inHg
Wind9.3 mph S
Humidity61%
Visibility6.2 mi
Dew point49°
Wed, 2167° / 53°0.19Light rain
67 °Light rain

Mercer, Wednesday, 21 October

Light rain. High 67°, low 53°.

Pressure30.18 inHg
Wind9.7 mph S
Humidity55%
Visibility—
Dew point49°
Thu, 2272° / 52°0Mostly clear
72 °Mostly clear

Mercer, Thursday, 22 October

Mostly clear. High 72°, low 52°.

Pressure30.15 inHg
Wind8.7 mph SE
Humidity60%
Visibility—
Dew point54°
Fri, 2374° / 58°0Overcast
74 °Overcast

Mercer, Friday, 23 October

Overcast. High 74°, low 58°.

Pressure30.06 inHg
Wind17.4 mph S
Humidity44%
Visibility—
Dew point48°
Sat, 2465° / 54°0Clear
65 °Clear

Mercer, Saturday, 24 October

Clear. High 65°, low 54°.

Pressure30.18 inHg
Wind13.6 mph S
Humidity45%
Visibility—
Dew point42°
Sun, 2555° / 48°0.04Light rain
55 °Light rain

Mercer, Sunday, 25 October

Light rain. High 55°, low 48°.

Pressure30.39 inHg
Wind11.4 mph N
Humidity51%
Visibility—
Dew point36°
Mon, 2662° / 48°0.13Light rain
62 °Light rain

Mercer, Monday, 26 October

Light rain. High 62°, low 48°.

Pressure30.18 inHg
Wind11.4 mph S
Humidity66%
Visibility—
Dew point45°
Tue, 2763° / 53°0.02Light rain
63 °Light rain

Mercer, Tuesday, 27 October

Light rain. High 63°, low 53°.

Pressure30.15 inHg
Wind6.4 mph SW
Humidity70%
Visibility—
Dew point51°
Wed, 2861° / 45°0Overcast
61 °Overcast

Mercer, Wednesday, 28 October

Overcast. High 61°, low 45°.

Pressure30.15 inHg
Wind8.9 mph E
Humidity45%
Visibility—
Dew point36°
Thu, 2958° / 45°0.92Rain
58 °Rain

Mercer, Thursday, 29 October

Rain. High 58°, low 45°.

Pressure29.65 inHg
Wind20.9 mph E
Humidity96%
Visibility—
Dew point46°
Fri, 3057° / 45°0.04Light rain
57 °Light rain

Mercer, Friday, 30 October

Light rain. High 57°, low 45°.

Pressure29.83 inHg
Wind16.6 mph NW
Humidity91%
Visibility—
Dew point43°
Sat, 3157° / 38°0Clear
57 °Clear

Mercer, Saturday, 31 October

Clear. High 57°, low 38°.

Pressure30.24 inHg
Wind8.7 mph NW
Humidity59%
Visibility—
Dew point39°
Sun, 0162° / 44°0Clear
62 °Clear

Mercer, Sunday, 1 November

Clear. High 62°, low 44°.

Pressure30.12 inHg
Wind9.4 mph SW
Humidity57%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0253° / 39°0.09Climate normal
53 °Climate normal

Mercer, Monday, 2 November

Climate normal for this date — 60-year average.

Average high53°
Average low39°
Average precipitation0.09 in
Chance of precipitation28%
Record high76° (1964)
Record low12° (1991)
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)

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.