As of 14:58 EDT

Weather in Derry, NH

87°Current weather

Derry, Saturday, 8 August, 14:58

Overcast. Feels like 94°. High 86°, low 71°.

Pressure29.88 inHg
Wind5 mph SW
Humidity65%
Visibility6.2 mi
Dew point74°

Monthly outlook for Derry, NH: average high 78.7°, average low 60.2°. That is 0.7° below the climate normal for August. Precipitation is expected on 8 days (about 2.2 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (91.7°), the coolest 16 August (51°).

78.7°/60.2°
Average high / low
−0.7°
Below normal
8 / 5
Wet days / normal
2.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August81.3°80.7°+0.3°
18 August – 27 August74.3°78.8°-2.5°
28 August – 6 Septemberat normal77°

August records over 66 years

101.7°2 August 1975All-time high
46°31 August 1965All-time low

Climate normals and records are computed from the nearest reference point — Lawrence (14 mi).

Sun, 0992° / 70°0Clear
92 °Clear

Derry, Sunday, 9 August

Clear. High 92°, low 70°.

Pressure29.88 inHg
Wind9.5 mph W
Humidity39%
Visibility6.2 mi
Dew point61°
Mon, 1088° / 67°0.03Light rain
88 °Light rain

Derry, Monday, 10 August

Light rain. High 88°, low 67°.

Pressure29.94 inHg
Wind7.1 mph SW
Humidity40%
Visibility6.2 mi
Dew point58°
Tue, 1186° / 67°0Partly cloudy
86 °Partly cloudy

Derry, Tuesday, 11 August

Partly cloudy. High 86°, low 67°.

Pressure29.80 inHg
Wind12.2 mph NW
Humidity39%
Visibility6.2 mi
Dew point56°
Wed, 1267° / 60°0.08Light rain
67 °Light rain

Derry, Wednesday, 12 August

Light rain. High 67°, low 60°.

Pressure29.80 inHg
Wind3.3 mph E
Humidity95%
Visibility6.2 mi
Dew point62°
Thu, 1383° / 59°0.04Light rain
83 °Light rain

Derry, Thursday, 13 August

Light rain. High 83°, low 59°.

Pressure29.71 inHg
Wind13.1 mph NW
Humidity85%
Visibility
Dew point65°
Fri, 1476° / 53°0Clear
76 °Clear

Derry, Friday, 14 August

Clear. High 76°, low 53°.

Pressure29.88 inHg
Wind10.6 mph NW
Humidity44%
Visibility
Dew point44°
Sat, 1575° / 52°0Clear
75 °Clear

Derry, Saturday, 15 August

Clear. High 75°, low 52°.

Pressure30.09 inHg
Wind8.8 mph NW
Humidity39%
Visibility
Dew point42°
Sun, 1678° / 51°0Partly cloudy
78 °Partly cloudy

Derry, Sunday, 16 August

Partly cloudy. High 78°, low 51°.

Pressure30.27 inHg
Wind5.8 mph SE
Humidity36%
Visibility
Dew point42°
Mon, 1781° / 56°0Overcast
81 °Overcast

Derry, Monday, 17 August

Overcast. High 81°, low 56°.

Pressure30.18 inHg
Wind8.7 mph SW
Humidity37%
Visibility
Dew point46°
Tue, 1872° / 62°0.41Rain
72 °Rain

Derry, Tuesday, 18 August

Rain. High 72°, low 62°.

Pressure30.00 inHg
Wind7.7 mph SW
Humidity99%
Visibility
Dew point63°
Wed, 1974° / 61°0.18Light rain
74 °Light rain

Derry, Wednesday, 19 August

Light rain. High 74°, low 61°.

Pressure29.85 inHg
Wind4.7 mph NE
Humidity68%
Visibility
Dew point61°
Thu, 2077° / 58°0.04Light rain
77 °Light rain

Derry, Thursday, 20 August

Light rain. High 77°, low 58°.

Pressure30.00 inHg
Wind5.5 mph E
Humidity61%
Visibility
Dew point55°
Fri, 2176° / 58°0.54Rain
76 °Rain

Derry, Friday, 21 August

Rain. High 76°, low 58°.

Pressure29.97 inHg
Wind10 mph SW
Humidity58%
Visibility
Dew point58°
Sat, 2278° / 62°0.84Rain
78 °Rain

Derry, Saturday, 22 August

Rain. High 78°, low 62°.

Pressure29.77 inHg
Wind6.4 mph S
Humidity84%
Visibility
Dew point66°
Sun, 2370° / 56°0Partly cloudy
70 °Partly cloudy

Derry, Sunday, 23 August

Partly cloudy. High 70°, low 56°.

Pressure29.77 inHg
Wind14.8 mph NW
Humidity44%
Visibility
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2478° / 62°0.08Climate normal
78 °Climate normal

Derry, Monday, 24 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.08 in
Chance of precipitation28%
Record high91° (2007)
Record low52° (1971)
Tue, 2578° / 62°0.12Climate normal
78 °Climate normal

Derry, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.12 in
Chance of precipitation27%
Record high96° (2007)
Record low53° (1971)
Wed, 2680° / 62°0.04Climate normal
80 °Climate normal

Derry, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high80°
Average low62°
Average precipitation0.04 in
Chance of precipitation20%
Record high95° (1993)
Record low52° (1981)
Thu, 2780° / 63°0.08Climate normal
80 °Climate normal

Derry, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation33%
Record high97° (1993)
Record low51° (1989)
Fri, 2879° / 63°0.12Climate normal
79 °Climate normal

Derry, Friday, 28 August

Climate normal for this date — 60-year average.

Average high79°
Average low63°
Average precipitation0.12 in
Chance of precipitation27%
Record high95° (1993)
Record low53° (1986)
Sat, 2978° / 63°0.15Climate normal
78 °Climate normal

Derry, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high78°
Average low63°
Average precipitation0.15 in
Chance of precipitation28%
Record high93° (2018)
Record low48° (1982)
Sun, 3079° / 62°0.11Climate normal
79 °Climate normal

Derry, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high79°
Average low62°
Average precipitation0.11 in
Chance of precipitation25%
Record high94° (1973)
Record low47° (1965)
Mon, 3178° / 61°0.09Climate normal
78 °Climate normal

Derry, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°
Average low61°
Average precipitation0.09 in
Chance of precipitation28%
Record high93° (2010)
Record low46° (1965)
Tue, 0177° / 61°0.05Climate normal
77 °Climate normal

Derry, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high77°
Average low61°
Average precipitation0.05 in
Chance of precipitation23%
Record high94° (2010)
Record low49° (1975)
Wed, 0276° / 60°0.14Climate normal
76 °Climate normal

Derry, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.14 in
Chance of precipitation27%
Record high94° (2010)
Record low49° (2017)
Thu, 0376° / 60°0.11Climate normal
76 °Climate normal

Derry, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation35%
Record high93° (1973)
Record low51° (1967)
Fri, 0477° / 60°0.11Climate normal
77 °Climate normal

Derry, Friday, 4 September

Climate normal for this date — 60-year average.

Average high77°
Average low60°
Average precipitation0.11 in
Chance of precipitation23%
Record high90° (1973)
Record low50° (1987)
Sat, 0576° / 60°0.08Climate normal
76 °Climate normal

Derry, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation22%
Record high92° (2018)
Record low49° (1994)
Sun, 0675° / 60°0.13Climate normal
75 °Climate normal

Derry, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°
Average low60°
Average precipitation0.13 in
Chance of precipitation27%
Record high94° (2018)
Record low49° (2000)

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 Derry, 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 Derry, 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.