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As of 17:47 CDT

Weather in Herndon, MO

92°Current weather

Herndon, Saturday, 8 August, 17:47

Clear. Feels like 105°. High 92°, low 69°.

Pressure29.94 inHg
Wind6.2 mph SE
Humidity61%
Visibility6.2 mi
Dew point77°
Sun, 09102° / 77°0Partly cloudy
102 °Partly cloudy

Herndon, Sunday, 9 August

Partly cloudy. High 102°, low 77°.

Pressure29.88 inHg
Wind18.7 mph SW
Humidity51%
Visibility6.2 mi
Dew point68°
Mon, 10101° / 79°0Partly cloudy
101 °Partly cloudy

Herndon, Monday, 10 August

Partly cloudy. High 101°, low 79°.

Pressure29.88 inHg
Wind17.4 mph SW
Humidity47%
Visibility6.2 mi
Dew point69°
Tue, 11100° / 83°0Overcast
100 °Overcast

Herndon, Tuesday, 11 August

Overcast. High 100°, low 83°.

Pressure29.83 inHg
Wind17 mph SW
Humidity42%
Visibility6.2 mi
Dew point68°
Wed, 1292° / 73°0.06Light rain
92 °Light rain

Herndon, Wednesday, 12 August

Light rain. High 92°, low 73°.

Pressure29.83 inHg
Wind0.4 mph N
Humidity52%
Visibility6.2 mi
Dew point70°
Thu, 1376° / 68°0.37Rain
76 °Rain

Herndon, Thursday, 13 August

Rain. High 76°, low 68°.

Pressure29.88 inHg
Wind10.2 mph E
Humidity84%
Visibility—
Dew point71°
Fri, 1481° / 64°0Mostly clear
81 °Mostly clear

Herndon, Friday, 14 August

Mostly clear. High 81°, low 64°.

Pressure30.12 inHg
Wind11.5 mph E
Humidity53%
Visibility—
Dew point59°
Sat, 1582° / 62°0.03Light rain
82 °Light rain

Herndon, Saturday, 15 August

Light rain. High 82°, low 62°.

Pressure30.21 inHg
Wind11.9 mph SE
Humidity56%
Visibility—
Dew point60°
Sun, 1685° / 69°0.48Rain
85 °Rain

Herndon, Sunday, 16 August

Rain. High 85°, low 69°.

Pressure30.06 inHg
Wind13 mph SE
Humidity79%
Visibility—
Dew point71°
Mon, 1795° / 78°0Partly cloudy
95 °Partly cloudy

Herndon, Monday, 17 August

Partly cloudy. High 95°, low 78°.

Pressure29.91 inHg
Wind10.8 mph S
Humidity54%
Visibility—
Dew point70°
Tue, 1886° / 73°0Overcast
86 °Overcast

Herndon, Tuesday, 18 August

Overcast. High 86°, low 73°.

Pressure29.97 inHg
Wind9.8 mph NE
Humidity65%
Visibility—
Dew point72°
Wed, 1995° / 72°0Overcast
95 °Overcast

Herndon, Wednesday, 19 August

Overcast. High 95°, low 72°.

Pressure29.85 inHg
Wind7.8 mph NE
Humidity50%
Visibility—
Dew point67°
Thu, 2085° / 72°1.53Heavy rain
85 °Heavy rain

Herndon, Thursday, 20 August

Heavy rain. High 85°, low 72°.

Pressure29.91 inHg
Wind6.2 mph NE
Humidity86%
Visibility—
Dew point73°
Fri, 2183° / 70°0.02Light rain
83 °Light rain

Herndon, Friday, 21 August

Light rain. High 83°, low 70°.

Pressure29.94 inHg
Wind8.1 mph NE
Humidity63%
Visibility—
Dew point66°
Sat, 2288° / 66°0Clear
88 °Clear

Herndon, Saturday, 22 August

Clear. High 88°, low 66°.

Pressure29.91 inHg
Wind5.8 mph S
Humidity50%
Visibility—
Dew point63°
Sun, 2370° / 60°0Overcast
70 °Overcast

Herndon, Sunday, 23 August

Overcast. High 70°, low 60°.

Pressure30.15 inHg
Wind13.3 mph NE
Humidity75%
Visibility—
Dew point56°

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 Herndon, MO 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 Herndon, MO 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.