Abstract: Based on the data of automatic weather stations at the top, middle, and foot of Saishiteng Mountain Observatory Site from 2022 to 2023, the distribution characteristics of air pressure, air temperature, relative humidity, precipitation, wind direction, wind speed, and visibility at different altitudes of Saishiteng Mountain were analyzed. The results are as follows: The diurnal variation of air pressure in Saishiteng Mountain shows a double-peak pattern, with a small difference in air pressure between day and night. The monthly variation shows a single-peak pattern, and the seasonal variation is obvious. The average air pressure shows a decreasing trend with the increase of altitude, and the lapse rate is 7.7 hPa/100 m. The diurnal variation of air temperature in Saishiteng Mountain shows a single-peak pattern, with the average temperature being highest in summer, followed by autumn, then spring, and lowest in winter. The average air temperature shows a decreasing trend with the increase of altitude, and the lapse rate is 0.77 ℃/100 m. The diurnal variation of relative humidity shows a single-peak pattern, with higher humidity at night than that during the day. The relative humidity is the highest in summer and the lowest in autumn. The relative humidity shows an increasing trend with the increase of altitude, and the increasing rate is 1.17%/100 m. The precipitation during the day is greater than that at night. Precipitation is mainly concentrated from May to August. Both the precipitation amount and precipitation days increase with the increase of altitude, and the increasing rates are 2.91 mm/100 m and 5.24 d/100 m respectively. The diurnal variation of wind speed shows a “V” shape, and the annual variation of wind speed shows a multi-peak pattern. The seasonal wind speed is the highest in spring, followed by summer and autumn, and the lowest in winter. The average wind speed, the number of gale days, and the extreme value of the maximum wind speed at the three stations all follow the order of middle of the mountain > top of the mountain > foot of the mountain, without obvious differences in altitude. The prevailing wind at the top of the mountain is WSW, the prevailing wind at the middle of the mountain is NW, and the prevailing wind at the foot of the mountain is NNE. The diurnal variation of visibility is greater at night than that during the day, showing a "one-peak-one-valley" pattern. The monthly variation shows a double-peak pattern, and the seasonal variation is in the order of autumn > winter > summer > spring, without obvious differences in altitude.