WEATHER REVIEW - January 2011
Headline: An average January. Unsettled to begin with and then anticyclonic. Little snow.
January began with
high pressure centred west of
Milder air was introduced across the county on the 7th on the back of outbreaks of rain, although the 8th and 9th were cold by comparison, with a widespread ground frost early on the 9th. Despite the initial cold, the 9th was a sunny day with temperatures lifting to around the seasonal average (5.9C) by the afternoon. Outbreaks of rain spread across the county the following day, resuming the trend towards milder weather in a fairly strong southerly airflow. In fact, the 11th was quite a windy day with gusts reaching 40mph at Pitsford.
A mild south-westerly
airflow persisted across the
From the 18th until
the end of the month, conditions remained anticyclonic. High pressure remained
fairly stationary across the
Air Temperatures The Highest Maximum: 13.0 C on 13th The Lowest Maximum: 1.7 C on 28th The Highest Minimum: 10.0 C on 14th The Lowest Minimum: -4.4 C on 31st The Mean Maximum: 6.4 C The Mean Minimum: 1.5 C The Overall Mean: 4.0 C Difference from the Monthly Mean: 0.0 C Solar Radiation Maximum (at 0900): 77.0 W/m^2 on 9th Mean (at 0900): 24.5 W/m^2 Relative Humidity: Highest Relative Humidity (at 0900): 100.0 % on 11th Lowest Relative Humidity (at 0900): 73.3 % on 27th Mean Relative Humidity (at 0900): 90.5 % Dew Point: The Highest Dew Point (0900): 10.6 C on 13th The Lowest Dew Point (at 0900): -5.1 C on 31st The Mean Dew Point (at 0900): 2.2 C Rainfall: Total: 39.1 mm Percentage of the Monthly Mean: 70.8 % Duration: 30.0 hrs Highest 24 hour fall (0900 to 0900): 9.3 mm on 13th Rain Days (>/=0.2mm): 10 Wet Days (>/=1.0mm): 8 Sunshine: Total Duration of Bright Sunshine: 27.6 hrs Sunniest day: 4.9 hrs on 9th No. of days without sunshine: 15 Percentage of the Monthly Mean: 49.4 % Cloud cover (mean at 0900): 6.7 oktas 83.8 % Pressure (reduced to sea level): The Highest Pressure (at 0900): 1040.7 mb on 21st The Lowest Pressure (at 0900): 992.0 mb on 8th Mean Pressure (at 0900): 1018.2 mb Winds Run of wind (mean over 24 hrs): 133.0 miles Mean daily wind speed: 7.2 mph Run of wind (cumulative): 4122.1 miles Highest Maximum Gust: 40 mph on 11th No. of gusts of 50mph or more: 0 Highest wind strength (at 0900): 27.7 mph on 16th Mean wind strength (at 0900): 10.7 mph Winds from the Following Directions: N 2 NE 3 E 1 SE 0 S 5 SW 7 W 2 NW 8 Calm 1 Concrete Lowest Concrete Minimum: -5.0 C on 31st Mean Concrete Minimum: 0.9 C Evaporation Piche 33.2 ml Days with: Thunder: 0 Hail <5mm: 0 Hail >/=5mm: 0 Snow or snow & rain: 1 Snow lying: 1 Fog: 1 Air Frost: 9 Duration of Air Frost: 156hrs Gales: 0 All data © Pitsford Hall weather station.
Click here to view the weather diary for January 2011.
Click here to view the full AWS weather record for January 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.