As of 10:32 EDT

Weather in Mercer, ME

49°

Mercer, Sunday, 11 October, 10:32

Overcast. Feels like 46°. High 55°, low 36°.

Pressure30.36 inHg

Wind6.5 mph S

Humidity80%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Monthly outlook for Mercer, ME: average high 51.8°, average low 35.2°. That is 2° below the climate normal for October. Precipitation is expected on 3 days (about 2.9 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 12 October (70.9°), the coolest 19 October (26.9°).

51.8°/35.2°

Average high / low

−2°

Below normal

3 / 5

Wet days / normal

2.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
11 October – 20 October	52.3°	56.4°	-2.2°
21 October – 30 October	50.9°	52.8°	-1°
31 October – 9 November	at normal	49.2°	—

October records over 66 years

82.2°6 October 2025All-time high

26.2°30 October 1962All-time low

Climate normals and records are computed from the nearest reference point — Belgrade (12 mi).

Mon, 1271° / 40°

71 °

Mercer, Monday, 12 October

Clear. High 71°, low 40°.

Pressure29.71 inHg

Wind3 mph W

Humidity51%

Visibility6.2 mi

Dew point48°

Tue, 1346° / 42°

1.5

46 °

Mercer, Tuesday, 13 October

Heavy rain. High 46°, low 42°.

Pressure30.12 inHg

Wind6.2 mph E

Humidity96%

Visibility2.6 mi

Dew point41°

Wed, 1454° / 45°

0.33

54 °

Mercer, Wednesday, 14 October

Rain. High 54°, low 45°.

Pressure29.83 inHg

Wind4.2 mph N

Humidity87%

Visibility6.2 mi

Dew point47°

Thu, 1555° / 37°

55 °

Mercer, Thursday, 15 October

Mostly clear. High 55°, low 37°.

Pressure30.06 inHg

Wind13.5 mph NW

Humidity48%

Visibility—

Dew point32°

Fri, 1643° / 34°

1.06

43 °

Mercer, Friday, 16 October

Rain. High 43°, low 34°.

Pressure29.88 inHg

Wind12.8 mph NW

Humidity96%

Visibility—

Dew point40°

Sat, 1749° / 37°

49 °

Mercer, Saturday, 17 October

Overcast. High 49°, low 37°.

Pressure29.56 inHg

Wind12.3 mph NW

Humidity64%

Visibility—

Dew point37°

Sun, 1844° / 29°

44 °

Mercer, Sunday, 18 October

Overcast. High 44°, low 29°.

Pressure30.09 inHg

Wind14.1 mph N

Humidity51%

Visibility—

Dew point22°

Mon, 1949° / 27°

49 °

Mercer, Monday, 19 October

Mostly clear. High 49°, low 27°.

Pressure30.53 inHg

Wind7 mph SW

Humidity38%

Visibility—

Dew point18°

Tue, 2058° / 32°

58 °

Mercer, Tuesday, 20 October

Light rain. High 58°, low 32°.

Pressure30.27 inHg

Wind6 mph NW

Humidity57%

Visibility—

Dew point30°

Wed, 2152° / 34°

52 °

Mercer, Wednesday, 21 October

Clear. High 52°, low 34°.

Pressure30.47 inHg

Wind4.6 mph N

Humidity48%

Visibility—

Dew point28°

Thu, 2252° / 30°

52 °

Mercer, Thursday, 22 October

Partly cloudy. High 52°, low 30°.

Pressure30.50 inHg

Wind3.4 mph N

Humidity54%

Visibility—

Dew point29°

Fri, 2353° / 32°

53 °

Mercer, Friday, 23 October

Clear. High 53°, low 32°.

Pressure30.45 inHg

Wind3.6 mph S

Humidity56%

Visibility—

Dew point31°

Sat, 2451° / 33°

51 °

Mercer, Saturday, 24 October

Overcast. High 51°, low 33°.

Pressure30.21 inHg

Wind4.2 mph S

Humidity66%

Visibility—

Dew point35°

Sun, 2547° / 40°

47 °

Mercer, Sunday, 25 October

Overcast. High 47°, low 40°.

Pressure29.94 inHg

Wind8.8 mph N

Humidity74%

Visibility—

Dew point38°

Mon, 2650° / 35°

0.02

50 °

Mercer, Monday, 26 October

Light rain. High 50°, low 35°.

Pressure29.94 inHg

Wind5.1 mph S

Humidity62%

Visibility—

Dew point32°

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

Tue, 2752° / 39°

0.11

52 °

Mercer, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.11 in

Chance of precipitation30%

Record high73° (1963)

Record low28° (1976)

Wed, 2852° / 38°

0.16

52 °

Mercer, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high52°

Average low38°

Average precipitation0.16 in

Chance of precipitation35%

Record high75° (2023)

Record low27° (1976)

Thu, 2951° / 37°

0.11

51 °

Mercer, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.11 in

Chance of precipitation30%

Record high68° (1989)

Record low28° (1965)

Fri, 3049° / 37°

0.12

49 °

Mercer, Friday, 30 October

Climate normal for this date — 60-year average.

Average high49°

Average low37°

Average precipitation0.12 in

Chance of precipitation25%

Record high68° (1989)

Record low26° (1962)

Sat, 3151° / 37°

0.11

51 °

Mercer, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.11 in

Chance of precipitation22%

Record high71° (2024)

Record low27° (2002)

Sun, 0151° / 38°

0.11

51 °

Mercer, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°

Average low38°

Average precipitation0.11 in

Chance of precipitation27%

Record high71° (2024)

Record low28° (1972)

Mon, 0250° / 38°

0.17

50 °

Mercer, Monday, 2 November

Climate normal for this date — 60-year average.

Average high50°

Average low38°

Average precipitation0.17 in

Chance of precipitation30%

Record high63° (2001)

Record low23° (2002)

Tue, 0350° / 38°

0.2

50 °

Mercer, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°

Average low38°

Average precipitation0.2 in

Chance of precipitation43%

Record high64° (1975)

Record low22° (2002)

Wed, 0449° / 37°

0.06

49 °

Mercer, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°

Average low37°

Average precipitation0.06 in

Chance of precipitation25%

Record high67° (1990)

Record low25° (2002)

Thu, 0549° / 37°

0.14

49 °

Mercer, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°

Average low37°

Average precipitation0.14 in

Chance of precipitation32%

Record high71° (2022)

Record low24° (1965)

Fri, 0649° / 37°

0.13

49 °

Mercer, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°

Average low37°

Average precipitation0.13 in

Chance of precipitation35%

Record high71° (2024)

Record low27° (1987)

Sat, 0749° / 36°

0.05

49 °

Mercer, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.05 in

Chance of precipitation28%

Record high69° (2022)

Record low19° (2002)

Sun, 0847° / 35°

0.08

47 °

Mercer, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°

Average low35°

Average precipitation0.08 in

Chance of precipitation18%

Record high63° (2020)

Record low19° (2002)

Mon, 0947° / 35°

0.11

47 °

Mercer, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°

Average low35°

Average precipitation0.11 in

Chance of precipitation30%

Record high66° (2020)

Record low22° (1971)

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, ME 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, ME 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.