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As of 20:21 EDT

Weather in Derby, CT

79°Current weather

Derby, Saturday, 8 August, 20:21

Overcast. Feels like 80°. High 87°, low 70°.

Pressure29.91 inHg
Wind1 mph NE
Humidity88%
Visibility6.2 mi
Dew point74°
Sun, 0991° / 72°0.01Light rain
91 °Light rain

Derby, Sunday, 9 August

Light rain. High 91°, low 72°.

Pressure29.94 inHg
Wind7.1 mph W
Humidity46%
Visibility6.2 mi
Dew point64°
Mon, 1085° / 69°0.01Light rain
85 °Light rain

Derby, Monday, 10 August

Light rain. High 85°, low 69°.

Pressure29.97 inHg
Wind7 mph SW
Humidity42%
Visibility6.2 mi
Dew point58°
Tue, 1190° / 70°0.01Light rain
90 °Light rain

Derby, Tuesday, 11 August

Light rain. High 90°, low 70°.

Pressure29.85 inHg
Wind7.3 mph NW
Humidity40%
Visibility6.2 mi
Dew point59°
Wed, 1278° / 66°0.26Rain
78 °Rain

Derby, Wednesday, 12 August

Rain. High 78°, low 66°.

Pressure29.74 inHg
Wind4.8 mph NW
Humidity73%
Visibility6.2 mi
Dew point65°
Thu, 1386° / 62°0.08Light rain
86 °Light rain

Derby, Thursday, 13 August

Light rain. High 86°, low 62°.

Pressure29.74 inHg
Wind12.1 mph NW
Humidity78%
Visibility—
Dew point68°
Fri, 1477° / 60°0Overcast
77 °Overcast

Derby, Friday, 14 August

Overcast. High 77°, low 60°.

Pressure29.94 inHg
Wind9.6 mph N
Humidity42%
Visibility—
Dew point46°
Sat, 1575° / 57°0Clear
75 °Clear

Derby, Saturday, 15 August

Clear. High 75°, low 57°.

Pressure30.12 inHg
Wind11.2 mph NW
Humidity36%
Visibility—
Dew point41°
Sun, 1676° / 61°0Overcast
76 °Overcast

Derby, Sunday, 16 August

Overcast. High 76°, low 61°.

Pressure30.30 inHg
Wind6.4 mph N
Humidity37%
Visibility—
Dew point44°
Mon, 1780° / 60°0Overcast
80 °Overcast

Derby, Monday, 17 August

Overcast. High 80°, low 60°.

Pressure30.21 inHg
Wind12.3 mph S
Humidity45%
Visibility—
Dew point51°
Tue, 1875° / 67°0.37Rain
75 °Rain

Derby, Tuesday, 18 August

Rain. High 75°, low 67°.

Pressure30.00 inHg
Wind9.4 mph S
Humidity89%
Visibility—
Dew point67°
Wed, 1982° / 66°0.02Light rain
82 °Light rain

Derby, Wednesday, 19 August

Light rain. High 82°, low 66°.

Pressure29.85 inHg
Wind7.2 mph N
Humidity64%
Visibility—
Dew point63°
Thu, 2075° / 64°0.04Light rain
75 °Light rain

Derby, Thursday, 20 August

Light rain. High 75°, low 64°.

Pressure29.97 inHg
Wind7.4 mph SE
Humidity61%
Visibility—
Dew point58°
Fri, 2169° / 65°1.37Rain
69 °Rain

Derby, Friday, 21 August

Rain. High 69°, low 65°.

Pressure29.97 inHg
Wind10.9 mph S
Humidity94%
Visibility—
Dew point65°
Sat, 2276° / 64°1.17Heavy rain
76 °Heavy rain

Derby, Saturday, 22 August

Heavy rain. High 76°, low 64°.

Pressure29.77 inHg
Wind12 mph SW
Humidity98%
Visibility—
Dew point67°
Sun, 2369° / 56°0Clear
69 °Clear

Derby, Sunday, 23 August

Clear. High 69°, low 56°.

Pressure29.91 inHg
Wind15.6 mph NW
Humidity47%
Visibility—
Dew point42°

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 Derby, CT 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 Derby, CT 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.