2nd-Cancer Pharmacology Research

Weifang in Aug/Sep

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In Weifang, the summers are long, hot, humid, and partly cloudy and the winters are freezing, dry, and mostly clear. Over the course of the year, the temperature typically varies from 20°F to 90°F and is rarely below 10°F or above 98°F.

Based on the tourism score, the best times of year to visit Weifang for warm-weather activities are from mid May to early July and from mid August to late September.

Best Time of Year to Visit

To characterize how pleasant the weather is in Weifang throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Weifang for general outdoor tourist activities are from mid May to early July and from mid August to late September, with a peak score in the second week of September.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Weifang for hot-weather activities is from late June to late August, with a peak score in the second week of August.


The hot season lasts for 4.3 months, from May 12 to September 22, with an average daily high temperature above 79°F. The hottest day of the year is July 28, with an average high of 90°F and low of 74°F.

The cold season lasts for 3.0 months, from November 28 to February 26, with an average daily high temperature below 47°F. The coldest day of the year is January 14, with an average low of 20°F and high of 37°F.


In Weifang, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year in Weifang begins around August 31 and lasts for 5.3 months, ending around February 10. On December 18, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 72% of the time, and overcast or mostly cloudy 28% of the time.

The cloudier part of the year begins around February 10 and lasts for 6.7 months, ending around August 31. On July 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 48% of the time, and clear, mostly clear, or partly cloudy 52% of the time.


A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Weifang varies significantly throughout the year.

The wetter season lasts 2.9 months, from June 12 to September 9, with a greater than 20% chance of a given day being a wet day. The chance of a wet day peaks at 38% on July 23.

The drier season lasts 9.1 months, from September 9 to June 12. The smallest chance of a wet day is 2% on January 24.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 38% on July 23.


To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Weifang experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.0 months, from March 25 to November 25, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 25, with an average total accumulation of 5.2 inches.

The rainless period of the year lasts for 4.0 months, from November 25 to March 25. The least rain falls around January 19, with an average total accumulation of 0.1 inches.


The length of the day in Weifang varies significantly over the course of the year. In 2019, the shortest day is December 22, with 9 hours, 39 minutes of daylight; the longest day is June 21, with 14 hours, 41 minutes of daylight.


We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Weifang experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.9 months, from June 16 to September 13, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The muggiest day of the year is July 28, with muggy conditions 88% of the time.


This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Weifang experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.0 months, from February 15 to June 16, with average wind speeds of more than 9.0 miles per hour. The windiest day of the year is May 2, with an average hourly wind speed of 11.0 miles per hour.

The calmer time of year lasts for 8.0 months, from June 16 to February 15. The calmest day of the year is August 30, with an average hourly wind speed of 6.9 miles per hour.

The predominant average hourly wind direction in Weifang varies throughout the year.

The wind is most often from the south for 5.4 months, from March 12 to August 24 and for 1.1 months, from September 20 to October 23, with a peak percentage of 54% on June 14. The wind is most often from the north for 3.9 weeks, from August 24 to September 20 and for 4.6 months, from October 23 to March 12, with a peak percentage of 35% on August 30.

Water Temperature

Weifang is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences extreme seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.2 months, from June 22 to September 28, with an average temperature above 71°F. The day of the year with the warmest water is August 10, with an average temperature of 80°F.

The time of year with cooler water lasts for 3.5 months, from December 15 to March 30, with an average temperature below 43°F. The day of the year with the coolest water is February 4, with an average temperature of 34°F.


For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Weifang typically lasts for 7.3 months (224 days), from around March 27 to around November 6, rarely starting before March 9 or after April 14, and rarely ending before October 21 or after November 22.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Weifang should appear around April 2, only rarely appearing before March 22 or after April 15.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.3 months, from April 13 to July 22, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is June 1, with an average of 6.6 kWh.

The darker period of the year lasts for 3.0 months, from November 3 to February 5, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest day of the year is December 19, with an average of 2.5 kWh.


For the purposes of this report, the geographical coordinates of Weifang are 36.710 deg latitude, 119.102 deg longitude, and 95 ft elevation.

The topography within 2 miles of Weifang is essentially flat, with a maximum elevation change of 82 feet and an average elevation above sea level of 96 feet. Within 10 miles is essentially flat (571 feet). Within 50 miles contains significant variations in elevation (3,366 feet).

The area within 2 miles of Weifang is covered by artificial surfaces (94%), within 10 miles by cropland (68%) and artificial surfaces (27%), and within 50 miles by cropland (61%) and artificial surfaces (15%).

Data Sources

This report illustrates the typical weather in Weifang, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There is only a single weather station, Qingdao Liuting International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Weifang.

At a distance of 124 kilometers from Weifang, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Weifang according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis  between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

Other Data

All data relating to the Sun’s position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA’s MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA’s Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.


The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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