WEATHER REVIEW - July 2011
Headline: The month was amongst the coolest July’s on record with rainfall about average.
With rising pressure in a polar air-mass, July began with below average temperatures, perhaps a signal for how the month as a whole would pan out. The afternoon was rather cool in spite of abundant sunshine and light winds. The weather became progressively warmer over the next three days and there were long sunny periods, with 9.5 hrs recorded at Pitsford on the 2nd. The warm spell peaked on the 4th with a high of 25C, although elsewhere the following day was a touch warmer.
Cooler conditions were introduced on the 6th as deep
depression centred west of
High pressure developed near
An unusually deep depression for the season tracked SE-wards
Western parts of
Air Temperatures The Highest Maximum: 25.4 C on 28th The Lowest Maximum: 17.0 C on 13th The Highest Minimum: 14.7 C on 4th The Lowest Minimum: 4.5 C on 5th The Mean Maximum: 20.7 C The Mean Minimum: 10.6 C The Overall Mean: 15.7 C Difference from the Monthly Mean: -1.1 C Solar Radiation Maximum (at 0900): 709.0 W/m^2 on 2nd Mean (at 0900): 309.7 W/m^2 Relative Humidity: Highest Relative Humidity (at 0900): 98.9 % on 16th Lowest Relative Humidity (at 0900): 44.5 % on 5th Mean Relative Humidity (at 0900): 73.3 % Dew Point: The Highest Dew Point (0900): 14.7 C on 28th The Lowest Dew Point (at 0900): 5.1 C on 1st The Mean Dew Point (at 0900): 11.1 C Rainfall: Total: 47.4 mm Percentage of the Monthly Mean: 105.8 % Duration: 32.6 hrs Highest 24 hour fall (0900 to 0900): 13.5 mm on 7th Rain Days (>/=0.2mm): 12 Wet Days (>/=1.0mm): 9 Sunshine: Total Duration of Bright Sunshine: 136.7 hrs Sunniest day: 12.2 hrs on 24th No. of days without sunshine: 5 Percentage of the Monthly Mean: 62.7 % Cloud cover (mean at 0900): 5.9 oktas 73.8 % Pressure (reduced to sea level): The Highest Pressure (at 0900): 1027.7 mb on 1st The Lowest Pressure (at 0900): 991.2 mb on 17th Mean Pressure (at 0900): 1013.5 mb Winds Run of wind (mean over 24 hrs): 93.2 miles Mean daily wind speed: 5.0 mph Run of wind (cumulative): 2890.3 miles Highest Maximum Gust: 31 mph on 23rd No. of gusts of 50mph or more: 0 Highest wind strength (at 0900): 18.4 mph on 7th Mean wind strength (at 0900): 8.6 mph Winds from the Following Directions: N 3 NE 4 E 1 SE 3 S 3 SW 2 W 4 NW 10 Calm 1 Concrete Lowest Concrete Minimum: 5.0 C on 5th Mean Concrete Minimum: 10.9 C Evaporation Piche 98.3 ml Pan 63.46 mm Days with: Thunder: 0 Hail <5mm: 0 Hail >/=5mm: 0 Snow or snow & rain: 0 Snow lying: 0 Fog: 0 Air Frost: 0 Gales: 0 All data © Pitsford Hall weather station.
Click here to view the weather diary for July 2011.
Click here to view the full AWS weather record for July 2011.
Click here to view the statistical summary for 2011.
The weather station publishes a full Monthly Weather Report (ISSN 1741-4733) which is distributed to libraries across Northamptonshire. This report comprises a full UK weather diary, reports of extreme weather events across the county, statistics from Pitsford Hall's affiliated stations across the county as well as news from the weather station itself. Individuals may download this report for £2 or take out an annual subscription for the paper-based report for £25. Click here for further details.