As of 05:37 EDT

Weather in Deephaven, NH

37°

Deephaven, Wednesday, 7 October, 05:37

Partly cloudy. Feels like 35°. High 64°, low 36°.

Pressure30.03 inHg

Wind3 mph SW

Humidity82%

Visibility6.2 mi

Dew point32°

See detailed hourly forecast

Monthly outlook for Deephaven, NH: average high 55.6°, average low 38.1°. That is 0.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 11 October (70.1°), the coolest 21 October (27.7°).

55.6°/38.1°

Average high / low

+0.1°

Above normal

4 / 5

Wet days / normal

0.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	58.2°	56.7°	+0.9°
17 October – 26 October	51.3°	52.7°	-0.8°
27 October – 5 November	at normal	49.1°	—

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 (7 mi).

Thu, 0864° / 47°

0.23

64 °

Deephaven, Thursday, 8 October

Rain. High 64°, low 47°.

Pressure29.74 inHg

Wind10.8 mph W

Humidity60%

Visibility6.2 mi

Dew point47°

Fri, 0957° / 41°

57 °

Deephaven, Friday, 9 October

Mostly clear. High 57°, low 41°.

Pressure30.00 inHg

Wind12.2 mph W

Humidity49%

Visibility6.2 mi

Dew point38°

Sat, 1058° / 39°

58 °

Deephaven, Saturday, 10 October

Clear. High 58°, low 39°.

Pressure30.42 inHg

Wind7.3 mph NW

Humidity43%

Visibility6.2 mi

Dew point33°

Sun, 1170° / 40°

70 °

Deephaven, Sunday, 11 October

Overcast. High 70°, low 40°.

Pressure30.27 inHg

Wind5.8 mph SW

Humidity49%

Visibility—

Dew point40°

Mon, 1260° / 43°

0.25

60 °

Deephaven, Monday, 12 October

Light rain. High 60°, low 43°.

Pressure29.77 inHg

Wind5.5 mph SW

Humidity98%

Visibility—

Dew point55°

Tue, 1346° / 36°

46 °

Deephaven, Tuesday, 13 October

Overcast. High 46°, low 36°.

Pressure30.03 inHg

Wind5.5 mph NW

Humidity54%

Visibility—

Dew point26°

Wed, 1452° / 36°

52 °

Deephaven, Wednesday, 14 October

Clear. High 52°, low 36°.

Pressure30.24 inHg

Wind10.1 mph NE

Humidity43%

Visibility—

Dew point25°

Thu, 1555° / 34°

55 °

Deephaven, Thursday, 15 October

Clear. High 55°, low 34°.

Pressure30.39 inHg

Wind9.9 mph E

Humidity44%

Visibility—

Dew point28°

Fri, 1655° / 46°

55 °

Deephaven, Friday, 16 October

Overcast. High 55°, low 46°.

Pressure30.21 inHg

Wind2.5 mph SE

Humidity73%

Visibility—

Dew point41°

Sat, 1757° / 52°

0.06

57 °

Deephaven, Saturday, 17 October

Light rain. High 57°, low 52°.

Pressure29.88 inHg

Wind3.2 mph E

Humidity90%

Visibility—

Dew point54°

Sun, 1857° / 37°

0.39

57 °

Deephaven, Sunday, 18 October

Rain. High 57°, low 37°.

Pressure29.32 inHg

Wind20.6 mph W

Humidity90%

Visibility—

Dew point37°

Mon, 1947° / 35°

47 °

Deephaven, Monday, 19 October

Mostly clear. High 47°, low 35°.

Pressure29.91 inHg

Wind18.3 mph W

Humidity48%

Visibility—

Dew point25°

Tue, 2042° / 29°

42 °

Deephaven, Tuesday, 20 October

Overcast. High 42°, low 29°.

Pressure30.09 inHg

Wind15.2 mph W

Humidity59%

Visibility—

Dew point26°

Wed, 2152° / 28°

52 °

Deephaven, Wednesday, 21 October

Clear. High 52°, low 28°.

Pressure30.18 inHg

Wind10.6 mph W

Humidity43%

Visibility—

Dew point22°

Thu, 2253° / 31°

53 °

Deephaven, Thursday, 22 October

Overcast. High 53°, low 31°.

Pressure30.00 inHg

Wind7.8 mph W

Humidity55%

Visibility—

Dew point32°

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

Fri, 2352° / 39°

0.15

52 °

Deephaven, Friday, 23 October

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.15 in

Chance of precipitation38%

Record high72° (1979)

Record low24° (1969)

Sat, 2453° / 38°

0.16

53 °

Deephaven, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.16 in

Chance of precipitation33%

Record high74° (1963)

Record low23° (1969)

Sun, 2551° / 39°

0.17

51 °

Deephaven, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high51°

Average low39°

Average precipitation0.17 in

Chance of precipitation37%

Record high75° (1963)

Record low27° (2018)

Mon, 2651° / 38°

0.15

51 °

Deephaven, Monday, 26 October

Climate normal for this date — 60-year average.

Average high51°

Average low38°

Average precipitation0.15 in

Chance of precipitation35%

Record high74° (1963)

Record low24° (2018)

Tue, 2751° / 38°

0.14

51 °

Deephaven, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high51°

Average low38°

Average precipitation0.14 in

Chance of precipitation25%

Record high72° (1963)

Record low25° (1976)

Wed, 2851° / 37°

0.19

51 °

Deephaven, 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 °

Deephaven, 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 °

Deephaven, 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 °

Deephaven, 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 °

Deephaven, 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 °

Deephaven, 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 °

Deephaven, 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 °

Deephaven, 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 °

Deephaven, 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)

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 Deephaven, 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 Deephaven, 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.