Monthly outlook for Peru, MA: average high 53.1°, average low 36.6°. That is 1.6° below the climate normal for October. Precipitation is expected on 7 days (about 2.3 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 13 October (70.1°), the coolest 19 October (26°).
53.1°/36.6°
Average high / low
−1.6°
Below normal
7 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
55.7°
56.8°
-0.6°
20 October – 29 October
48.8°
53.5°
-2.6°
30 October – 8 November
at normal
50.2°
—
October records over 66 years
81.7°6 October 2007All-time high
15.6°31 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Chester (11 mi).
Sun, 1155° / 36°0.34
55 °
Peru, Sunday, 11 October
Rain. High 55°, low 36°.
Pressure30.36 inHg
Wind7.7 mph SE
Humidity67%
Visibility6.2 mi
Dew point42°
Mon, 1270° / 41°0.37
70 °
Peru, Monday, 12 October
Rain. High 70°, low 41°.
Pressure29.80 inHg
Wind6.5 mph N
Humidity68%
Visibility6.2 mi
Dew point55°
Tue, 1370° / 50°0.18
70 °
Peru, Tuesday, 13 October
Rain. High 70°, low 50°.
Pressure29.88 inHg
Wind9.4 mph S
Humidity68%
Visibility6.2 mi
Dew point55°
Wed, 1461° / 50°0.22
61 °
Peru, Wednesday, 14 October
Rain. High 61°, low 50°.
Pressure29.80 inHg
Wind15.3 mph NW
Humidity75%
Visibility6.2 mi
Dew point53°
Thu, 1550° / 38°0
50 °
Peru, Thursday, 15 October
Partly cloudy. High 50°, low 38°.
Pressure30.24 inHg
Wind12.3 mph NW
Humidity57%
Visibility—
Dew point31°
Fri, 1658° / 36°0.94
58 °
Peru, Friday, 16 October
Rain. High 58°, low 36°.
Pressure30.09 inHg
Wind11.2 mph S
Humidity71%
Visibility—
Dew point30°
Sat, 1753° / 37°0.2
53 °
Peru, Saturday, 17 October
Rain. High 53°, low 37°.
Pressure29.77 inHg
Wind11.4 mph W
Humidity62%
Visibility—
Dew point35°
Sun, 1839° / 27°0
39 °
Peru, Sunday, 18 October
Overcast. High 39°, low 27°.
Pressure30.06 inHg
Wind13.8 mph NW
Humidity58%
Visibility—
Dew point22°
Mon, 1943° / 26°0
43 °
Peru, Monday, 19 October
Clear. High 43°, low 26°.
Pressure30.42 inHg
Wind9.8 mph NW
Humidity41%
Visibility—
Dew point15°
Tue, 2051° / 28°0
51 °
Peru, Tuesday, 20 October
Overcast. High 51°, low 28°.
Pressure30.56 inHg
Wind3.8 mph NW
Humidity32%
Visibility—
Dew point16°
Wed, 2151° / 31°0
51 °
Peru, Wednesday, 21 October
Overcast. High 51°, low 31°.
Pressure30.53 inHg
Wind5.5 mph SE
Humidity45%
Visibility—
Dew point25°
Thu, 2247° / 34°0.04
47 °
Peru, Thursday, 22 October
Light rain. High 47°, low 34°.
Pressure30.30 inHg
Wind5.9 mph S
Humidity82%
Visibility—
Dew point36°
Fri, 2353° / 43°0.02
53 °
Peru, Friday, 23 October
Light rain. High 53°, low 43°.
Pressure29.97 inHg
Wind10.4 mph NW
Humidity75%
Visibility—
Dew point43°
Sat, 2446° / 37°0.01
46 °
Peru, Saturday, 24 October
Light rain. High 46°, low 37°.
Pressure29.97 inHg
Wind13.7 mph W
Humidity69%
Visibility—
Dew point33°
Sun, 2545° / 35°0
45 °
Peru, Sunday, 25 October
Mostly clear. High 45°, low 35°.
Pressure30.09 inHg
Wind12.2 mph NW
Humidity61%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2653° / 39°0.13
53 °
Peru, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.13 in
Chance of precipitation35%
Record high75° (1963)
Record low26° (2018)
Tue, 2752° / 38°0.15
52 °
Peru, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.15 in
Chance of precipitation23%
Record high76° (1963)
Record low24° (1976)
Wed, 2852° / 37°0.21
52 °
Peru, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.21 in
Chance of precipitation30%
Record high72° (2023)
Record low24° (1976)
Thu, 2950° / 36°0.17
50 °
Peru, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.17 in
Chance of precipitation28%
Record high67° (1989)
Record low25° (1965)
Fri, 3050° / 36°0.18
50 °
Peru, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.18 in
Chance of precipitation25%
Record high70° (2024)
Record low24° (2020)
Sat, 3151° / 36°0.09
51 °
Peru, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.09 in
Chance of precipitation23%
Record high72° (2024)
Record low16° (2011)
Sun, 0152° / 37°0.14
52 °
Peru, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.14 in
Chance of precipitation27%
Record high70° (1974)
Record low24° (2011)
Mon, 0252° / 37°0.13
52 °
Peru, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.13 in
Chance of precipitation32%
Record high72° (1982)
Record low22° (2011)
Tue, 0352° / 37°0.16
52 °
Peru, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.16 in
Chance of precipitation38%
Record high67° (2003)
Record low24° (1980)
Wed, 0450° / 36°0.06
50 °
Peru, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.06 in
Chance of precipitation27%
Record high69° (1994)
Record low25° (2013)
Thu, 0550° / 36°0.16
50 °
Peru, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.16 in
Chance of precipitation35%
Record high70° (1994)
Record low25° (1965)
Fri, 0649° / 36°0.13
49 °
Peru, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.13 in
Chance of precipitation42%
Record high70° (2024)
Record low24° (2012)
Sat, 0748° / 34°0.08
48 °
Peru, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.08 in
Chance of precipitation27%
Record high66° (2020)
Record low24° (1962)
Sun, 0847° / 34°0.15
47 °
Peru, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.15 in
Chance of precipitation32%
Record high67° (2020)
Record low21° (2019)
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 Peru, MA 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 Peru, MA 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.