Monthly outlook for Blair, NH: average high 52.5°, average low 40.9°. That is 0.6° below the climate normal for October. Precipitation is expected on 8 days (about 8.2 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 12 October (68.1°), the coolest 18 October (27.3°).
52.5°/40.9°
Average high / low
−0.6°
Below normal
8 / 5
Wet days / normal
8.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
54°
54.7°
-0.4°
22 October – 31 October
50.1°
50.8°
-0.4°
1 November – 10 November
at normal
47.3°
—
October records over 66 years
80.1°6 October 2025All-time high
21°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Sandwich (11 mi).
Tue, 1349° / 42°1.14
49 °
Blair, Tuesday, 13 October
Heavy rain. High 49°, low 42°.
Pressure30.06 inHg
Wind8.1 mph SE
Humidity99%
Visibility4.1 mi
Dew point42°
Wed, 1455° / 46°0.63
55 °
Blair, Wednesday, 14 October
Heavy rain. High 55°, low 46°.
Pressure29.85 inHg
Wind2 mph S
Humidity88%
Visibility6.2 mi
Dew point48°
Thu, 1554° / 39°0
54 °
Blair, Thursday, 15 October
Partly cloudy. High 54°, low 39°.
Pressure30.21 inHg
Wind8.1 mph NW
Humidity51%
Visibility6.2 mi
Dew point32°
Fri, 1648° / 40°0.8
48 °
Blair, Friday, 16 October
Heavy rain. High 48°, low 40°.
Pressure29.68 inHg
Wind22.2 mph NW
Humidity99%
Visibility—
Dew point46°
Sat, 1740° / 31°0.09
40 °
Blair, Saturday, 17 October
Light snow. High 40°, low 31°.
Pressure29.97 inHg
Wind18.6 mph NW
Humidity69%
Visibility—
Dew point28°
Sun, 1846° / 27°0
46 °
Blair, Sunday, 18 October
Overcast. High 46°, low 27°.
Pressure30.59 inHg
Wind9.1 mph NW
Humidity39%
Visibility—
Dew point15°
Mon, 1959° / 33°0
59 °
Blair, Monday, 19 October
Mostly clear. High 59°, low 33°.
Pressure30.33 inHg
Wind8.2 mph W
Humidity40%
Visibility—
Dew point28°
Tue, 2062° / 43°0
62 °
Blair, Tuesday, 20 October
Clear. High 62°, low 43°.
Pressure30.27 inHg
Wind5.9 mph NW
Humidity57%
Visibility—
Dew point41°
Wed, 2159° / 42°0
59 °
Blair, Wednesday, 21 October
Mostly clear. High 59°, low 42°.
Pressure30.45 inHg
Wind4.6 mph SE
Humidity69%
Visibility—
Dew point43°
Thu, 2249° / 47°0
49 °
Blair, Thursday, 22 October
Light rain. High 49°, low 47°.
Pressure30.45 inHg
Wind4.5 mph E
Humidity96%
Visibility—
Dew point47°
Fri, 2355° / 46°1.88
55 °
Blair, Friday, 23 October
Heavy rain. High 55°, low 46°.
Pressure30.00 inHg
Wind15.6 mph E
Humidity99%
Visibility—
Dew point47°
Sat, 2457° / 51°3.35
57 °
Blair, Saturday, 24 October
Heavy rain. High 57°, low 51°.
Pressure29.23 inHg
Wind17.7 mph E
Humidity97%
Visibility—
Dew point55°
Sun, 2549° / 47°0.19
49 °
Blair, Sunday, 25 October
Light rain. High 49°, low 47°.
Pressure29.41 inHg
Wind9.6 mph NE
Humidity92%
Visibility—
Dew point46°
Mon, 2645° / 39°0.02
45 °
Blair, Monday, 26 October
Light rain. High 45°, low 39°.
Pressure29.59 inHg
Wind8.7 mph NW
Humidity87%
Visibility—
Dew point37°
Tue, 2745° / 39°0
45 °
Blair, Tuesday, 27 October
Overcast. High 45°, low 39°.
Pressure29.65 inHg
Wind11.9 mph NW
Humidity66%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2851° / 37°0.19
51 °
Blair, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.19 in
Chance of precipitation37%
Record high71° (2023)
Record low26° (1976)
Thu, 2949° / 36°0.11
49 °
Blair, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation33%
Record high67° (1971)
Record low25° (1965)
Fri, 3048° / 35°0.17
48 °
Blair, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.17 in
Chance of precipitation28%
Record high66° (1989)
Record low25° (2020)
Sat, 3149° / 36°0.11
49 °
Blair, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation27%
Record high70° (2024)
Record low21° (2020)
Sun, 0150° / 37°0.12
50 °
Blair, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.12 in
Chance of precipitation25%
Record high68° (1974)
Record low25° (2023)
Mon, 0249° / 36°0.15
49 °
Blair, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.15 in
Chance of precipitation33%
Record high65° (2001)
Record low20° (2002)
Tue, 0349° / 36°0.23
49 °
Blair, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.23 in
Chance of precipitation43%
Record high66° (1990)
Record low19° (2002)
Wed, 0448° / 35°0.08
48 °
Blair, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.08 in
Chance of precipitation27%
Record high66° (1987)
Record low22° (2020)
Thu, 0547° / 35°0.16
47 °
Blair, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.16 in
Chance of precipitation38%
Record high69° (2022)
Record low23° (1965)
Fri, 0647° / 36°0.15
47 °
Blair, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.15 in
Chance of precipitation37%
Record high69° (2024)
Record low25° (1987)
Sat, 0747° / 35°0.07
47 °
Blair, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (2020)
Record low15° (2002)
Sun, 0845° / 33°0.09
45 °
Blair, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.09 in
Chance of precipitation27%
Record high65° (2020)
Record low15° (2002)
Mon, 0945° / 33°0.12
45 °
Blair, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.12 in
Chance of precipitation30%
Record high65° (2020)
Record low18° (1971)
Tue, 1046° / 33°0.15
46 °
Blair, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.15 in
Chance of precipitation38%
Record high66° (2020)
Record low17° (2017)
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 Blair, NH 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 Blair, NH 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.