Summers in the United States are hot, with daily temperatures in the shade topping 100 degrees Fahrenheit (38 degrees Celsius) in virtually every state from June through August. In the summer, temperatures in the desert can reach 130 degrees Fahrenheit (55 degrees Celsius). Except at the beaches, where humidity may be unpleasant, humidity is minimal. Wind from the deserts can blow across the region, so expect windy conditions at times.
Winters in the United States are cold, with daytime temperatures below 45 degrees F (7 C) and nighttime temperatures dropping to 10 degrees F (14 C) or lower. Daylight hours are short, limited mostly to just a few hours near the sun's rise and its descent below the horizon. The country receives most of its rainfall in the spring and summer, with April being the wettest month.
Saudi Arabia has two distinct seasons: winter and summer. Winter lasts from approximately November until March when it gets very cold with daytime temperatures that rarely go above 50 degrees Fahrheit (10 C). Nighttime temperatures often drop below 0 degrees Fahrheit (–20 C). It snows occasionally in the mountains north of Jeddah. Summer brings warmer temperatures than in the northern hemisphere with an average maximum temperature in July of 85 degrees Fahrheit (30 C) and a minimum of 55 degrees Fahrheit (13 C). Rainfall is high throughout the year, but especially during the monsoon season which starts around June and ends around October.
Temperatures in the deserts vary greatly, ranging from a high of 46 degrees Celsius (114 degrees Fahrenheit) during the day to a low of 6 degrees Celsius (42 degrees Fahrenheit) after nightfall. During the winter, desert temperatures can fall below 0 degrees Celsius (32 deg F). In general, summers are hotter and winters are cooler than air-conditioned offices or homes, but the heat of the desert can still be uncomfortable if you aren't used to it.
In terms of human mortality, the greatest danger in the desert is not cold or heat, but rather water deprivation. The brain and body need water to function properly; without it they will fail. Most people can survive for several days without food, but only about one week without water.
In ancient times, the Egyptians built large cities near water sources, because they were afraid that their crops would fail if the soil was too dry or wet. Today, we have electricity to keep our farms productive even when it's hot out or not, but this wasn't always the case. Before the advent of modern agriculture, most people lived where the land allowed them to, whether it was near water or not. They depended on rain clouds and wind for supply, instead of relying on irrigation channels and pumps. This is why farmers throughout history have looked for ways to prevent their lands from being abandoned during drought seasons.
Even in the middle of summer, there can be mild and wet days with highs of approximately 20 °C (68 °F), as well as scorching spells with temperatures exceeding 30 °C (86 °F) for a few days. Temperatures are normally comfortable, with highs around 22/24 degrees Celsius (72/75 degrees Fahrenheit) and lows around 12/13 degrees Celsius (54/55 degrees Fahrenheit). Snowfall is rare but does occur throughout the year, especially in the mountains.
The average annual temperature in the Czech Republic is 10-12 degrees Celsius (50-60 degrees Fahrenheit). Spring and autumn are the warmest seasons, while winter is the coldest.
The country's geographical location affects its climate. It is situated at the crossroads between continental Europe and central Europe, which gives it a temperate climate. The territory lies within the temperate zone, which means that it has both a continental climate (with four distinct seasons) and an oceanic climate (sunny with little precipitation).
There is one major city in the Czech Republic - Prague. This is where most of the population lives and works. However, cities like Brno, Olomouc, and Kosice have a similar population to Prague.
Prague has a humid continental climate. This means that although it has four distinct seasons, there is not a great deal of difference between day time temperatures and nighttime temperatures. Winters are long and cold, with January being the coldest month, followed by February.
Summers in this location are extremely hot, with typical highs of 37/38 degrees Celsius (99/100 degrees Fahrenheit), and the humidity from the sea makes the heat unpleasant. When the wind blows from the inland, the humidity lowers, but the temperature can rise to almost 50 degrees Celsius (122 degF). Winters are cool, with daytime temperatures around 20-30 degrees Celsius (68-86 degF) and nighttime lows below 10 degrees Celsius (50 degF). The best time to visit is between April and October when the climate is comfortable.
The country's desert interior provides relief from the heat during the summer months. But rain can also come as a surprise here; floods and storms are common occurrences. Heavy rains can cause roads to become impassable, damaging cars that are not equipped with flood insurance. Dense fog can roll in quickly, making driving difficult if not impossible. Be alert for these signs that indicate poor driving conditions: clouds appearing in the sky ahead of an approaching storm, heavy traffic on roads out of cities, large numbers of vehicles stopping suddenly.
Oman has a number of protected areas where certain types of wildlife can be seen. These include the Dhofar Desert Conservation Area, which is home to many species of reptiles and birds; and the Northern Frontier Wildlife Reserve, which includes forested hills and valleys covered in wild plants.